[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:3885":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":8,"polytypeof":8,"groupid":8,"weighting":12,"nolocadd":13,"blacklisted":13,"mindat_formula":8,"mindat_formula_note":8,"ima_formula":8,"elements":14,"sigelements":20,"key_elements":8,"impurities":8,"cim":8,"ima_status":8,"ima_notes":8,"ima_history":8,"approval_year":8,"publication_year":8,"discovery_year":8,"strunz10ed1":21,"strunz10ed2":21,"strunz10ed3":21,"strunz10ed4":8,"dana8ed1":21,"dana8ed2":21,"dana8ed3":21,"dana8ed4":21,"csystem":8,"cclass":8,"spacegroup":8,"spacegroupset":21,"a":8,"b":8,"c":8,"alpha":8,"beta":8,"gamma":8,"aerror":8,"berror":8,"cerror":8,"alphaerror":8,"betaerror":8,"gammaerror":8,"va3":8,"z":8,"csmetamict":13,"commentcrystal":8,"twinning":8,"tranglide":8,"parting":8,"epitaxidescription":8,"morphology":8,"tlform":8,"hmin":8,"hmax":8,"hardtype":8,"vhnmin":21,"vhnmax":21,"vhnerror":8,"vhng":8,"vhns":8,"commenthard":8,"dmeas":21,"dmeas2":21,"dcalc":21,"dmeaserror":8,"dcalcerror":8,"commentdense":8,"lustre":8,"lustretype":8,"commentluster":8,"diapheny":8,"streak":8,"colour":8,"commentcolor":8,"colors":8,"streak_colors":8,"luminescence":8,"uv":8,"cleavage":8,"cleavagetype":8,"fracturetype":8,"tenacity":8,"commentbreak":8,"opticaltype":8,"opticalsign":8,"opticalalpha":8,"opticalalpha2":21,"opticalalphaerror":8,"opticalbeta":8,"opticalbeta2":21,"opticalbetaerror":8,"opticalgamma":8,"opticalgamma2":21,"opticalgammaerror":8,"opticalomega":8,"opticalomega2":21,"opticalomegaerror":8,"opticalepsilon":8,"opticalepsilon2":21,"opticalepsilonerror":8,"opticaln":8,"opticaln2":8,"opticalnerror":8,"optical2vcalc":8,"optical2vcalc2":8,"optical2vcalcerror":8,"optical2vmeasured":8,"optical2vmeasured2":8,"optical2vmeasurederror":8,"rimin":8,"rimax":8,"opticaldispersion":8,"opticalpleochroism":8,"opticalpleochorismdesc":8,"opticalbirefringence":8,"opticalcomments":8,"opticalcolour":8,"opticalinternal":8,"opticaltropic":8,"opticalanisotropism":8,"opticalbireflectance":8,"opticalextinction":8,"opticalr":8,"specdispm":8,"ir":8,"electrical":8,"magnetism":8,"thermalbehaviour":8,"other":8,"industrial":8,"occurrence":8,"otheroccurrence":8,"type_specimen_store":8,"description_short":8,"aboutname":22,"rock_parent":8,"rock_parent2":8,"rock_root":23,"rock_bgs_code":8,"meteoritical_code":8,"updttime":24,"reviewed_at":8,"variety_of":25,"varieties":36,"group_members":37,"associates":38,"confused_with":39,"type_localities":40,"occurrence_total":41,"citations":42,"images":99,"structures":325,"synonyms":326,"language_names":339,"wikidata_qid":8,"texts":340},3885,"1:1:3885:6","312fc5d9-cf2e-44b7-a03b-763089a63b47","Tanzanite",null,2,"variety",4430,6395,false,[15,16,17,18,19],"Al","Ca","Si","O","H",[15,16,17,18,19],"0","Named after the country of Tanzania.",0,"2025-08-11 12:14:24",{"id":11,"name":26,"entrytype":23,"csystem":27,"ima_formula":28,"mindat_formula":29,"hmin":30,"hmax":31,"dmeas":32,"dcalc":33,"strunz10ed1":34,"primary_image_id":35},"Zoisite","Orthorhombic","Ca\u003Csub>2\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>[Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>][SiO\u003Csub>4\u003C\u002Fsub>]O(OH)","(CaCa)(AlAlAl)O[Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>][SiO\u003Csub>4\u003C\u002Fsub>](OH)",6,7,"3.15","3.35","9",31047,[],[],[],[],[],4,[43,47,51,55,59,63,68,72,76,79,82,85,90,95],{"id":44,"year":45,"html":46,"doi":8},525171,1969,"Hurlbut, C. S. (1969) Gem zoisite from Tanzania. \u003Ci>American Mineralogist\u003C\u002Fi>,  54 (5-6) 702-709 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM54\u002FAM54_702.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":48,"year":49,"html":50,"doi":8},16125146,1971,"Faye and Nickel (1971): Can. Mineral., 10, 812-821.",{"id":52,"year":53,"html":54,"doi":8},16125147,1976,"Gübelin, E. and Weibel, M. (1976): Neuer Untersuchungen am blauen Zoisit (Tanzanit). Z. dt Gemmol. Ges., 25, 23.",{"id":56,"year":57,"html":58,"doi":8},12909845,2009,"Wilson, Wendell E., Saul, John M., Pardieu, Vincent, Hughes, Richard W. (2009) Famous mineral localities: The Merelani Tanzanite Mines, Lelatema Mountains, Arusha Region, Tanzania. \u003Ci>The Mineralogical Record\u003C\u002Fi>, 40 (5) 346-408",{"id":60,"year":61,"html":62,"doi":8},16125153,2013,"minerals.gps.caltech.edu (n.d.) \u003Ca target='_blank' rel='nofollow' href='http:\u002F\u002Fminerals.gps.caltech.edu\u002Ffiles\u002Fvisible\u002Fzoisite\u002Findex.html'>http:\u002F\u002Fminerals.gps.caltech.edu\u002Ffiles\u002Fvisible\u002Fzoisite\u002Findex.html\u003C\u002Fa>",{"id":64,"year":65,"html":66,"doi":67},506392,2014,"HARRIS, C., HLONGWANE, W., GULE, N., SCHEEPERS, R. (2014) Origin of tanzanite and associated gemstone mineralization at Merelani, Tanzania. \u003Ci>South African Journal of Geology\u003C\u002Fi>,  117 (1). 15-30 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2113\u002Fgssajg.117.1.15'>doi:10.2113\u002Fgssajg.117.1.15\u003C\u002Fa>","10.2113\u002Fgssajg.117.1.15",{"id":69,"year":70,"html":71,"doi":8},16125152,2017,"www.lapigems.com (n.d.) \u003Ca target='_blank' rel='nofollow' href='https:\u002F\u002Fwww.lapigems.com\u002Fblog\u002Fpost\u002FTanzanite-Heating-The-Facts'>https:\u002F\u002Fwww.lapigems.com\u002Fblog\u002Fpost\u002FTanzanite-Heating-The-Facts\u003C\u002Fa>",{"id":73,"year":74,"html":75,"doi":8},16125150,2018,"Pimthong Thongnopkun, Phet-Anong Chanwanitsakun (2018) Color improvement using heat treatment and characteristic spectra of brownish yellow zoisite. in abstracts of the 22nd IMA Meeting Melbourne p 518.",{"id":77,"year":74,"html":78,"doi":8},17515532,"Gessner, Robert (2018) Tanzanite: Geology and Gemology , in \u003Ci>Tanzanite and Tsavorite\u003C\u002Fi>. \u003Ci>15th Sinkankas Symposium\u003C\u002Fi>,  15. 8-18",{"id":80,"year":74,"html":81,"doi":8},17515537,"Robertson, Stuart (2018) Tanzanite Price Trends—Past, Present and Future , in \u003Ci>Tanzanite and Tsavorite\u003C\u002Fi>. \u003Ci>15th Sinkankas Symposium\u003C\u002Fi>,  15. 52-58",{"id":83,"year":74,"html":84,"doi":8},17515538,"McClure, Shane (2018) Tsavorite and Tanzanite—Treatments and Imitations , in \u003Ci>Tanzanite and Tsavorite\u003C\u002Fi>. \u003Ci>15th Sinkankas Symposium\u003C\u002Fi>,  15. 58-62",{"id":86,"year":87,"html":88,"doi":89},4566040,2020,"Cairncross, Bruce (2020) The Where of Mineral Names: Tanzanite, A Variety of Zoisite, Merelani Hills, Simanjiro District, Manyara Region, Tanzania. \u003Ci>Rocks & Minerals\u003C\u002Fi>, 95 (5). 458-462 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1080\u002F00357529.2020.1771156'>doi:10.1080\u002F00357529.2020.1771156\u003C\u002Fa>","10.1080\u002F00357529.2020.1771156",{"id":91,"year":92,"html":93,"doi":94},16125154,2023,"Bačík, Peter, Wildner, Manfred, Cempírek, Jan, Škoda, Radek, Cibula, Peter, Vaculovič, Tomáš (2023) The position of vanadium in the crystal structure of zoisite, variety tanzanite: Structural refinement, optical absorption spectroscopy and bond-valence calculations. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  87 (4) 599-610 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fmgm.2023.48'>doi:10.1180\u002Fmgm.2023.48\u003C\u002Fa>","10.1180\u002Fmgm.2023.48",{"id":96,"year":97,"html":98,"doi":8},17937503,2025,"Schwarzinger, Clemens, Ulatowski, Steve, Rossman, George R. (2025) \u003Ci>The Origin of Color in Tanzanite and Zoisite from Merelani, Tanzania\u003C\u002Fi>. csgemstones.com. \u003Ca target='_blank' href='https:\u002F\u002Fwww.jku.at\u002Ffileadmin\u002Fgruppen\u002F169\u002FThe_Origin_of_Color_in_Tanzanite_and_Zoisite_from_Merelani__Tanzania.pdf' class='refpdflink'>\u003C\u002Fa>",[100,110,120,130,138,146,154,161,169,175,182,188,194,202,209,216,223,231,241,250,257,265,273,279,286,292,299,305,311,318],{"id":101,"source_url":102,"license_code":103,"credit_html":104,"title":105,"description":106,"author":107,"original_width":108,"original_height":109},81976,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6634154","Public domain","Parent Géry, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6634154\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Dichroïsme tanzanite 4(Tanzanie).jpg","\u003Ca href=\"\u002F\u002Fcommons.wikimedia.org\u002Fw\u002Findex.php?title=Tanzanite&action=edit&redlink=1\" class=\"new\" title=\"Tanzanite (page does not exist)\">Tanzanite\u003C\u002Fa>","Parent Géry",4288,2848,{"id":111,"source_url":112,"license_code":113,"credit_html":114,"title":115,"description":116,"author":117,"original_width":118,"original_height":119},81977,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9409630","CC BY 3.0","Didier Descouens, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9409630\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoïsite (Tanzanite).jpg","\u003Ca href=\"\u002F\u002Fcommons.wikimedia.org\u002Fwiki\u002FCategory:Tanzanite\" title=\"Category:Tanzanite\">Tanzanite\u003C\u002Fa> (Zoisite) rough stone and cut stone \n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality : C-Block Mine, Merelani Hills (Mererani), Lelatema Mts, Arusha Tanzania\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Didier Descouens",4285,3000,{"id":121,"source_url":122,"license_code":123,"credit_html":124,"title":125,"description":126,"author":127,"original_width":128,"original_height":129},81979,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10131403","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10131403\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-41834.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa> (Var.: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FTanzanite\" class=\"extiw\" title=\"en:Tanzanite\">Tanzanite\u003C\u002Fa>)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A VERY sculptural, glassy, lustrous, bright crystal with superb aesthetics! It is VERY gemmy and transparent in most parts. It shows excellent blue and purple colors along the a and b axes, but the c axis shows no red or brown hue, indicating that it is a crystal treated by heat to enhance the natural blue tones. 3.3 x 2.6 x 1.5 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",438,540,{"id":131,"source_url":132,"license_code":123,"credit_html":133,"title":134,"description":135,"author":127,"original_width":136,"original_height":137},81981,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10169867","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10169867\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-263869.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa> (Var.: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FTanzanite\" class=\"extiw\" title=\"en:Tanzanite\">Tanzanite\u003C\u002Fa>)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.0 x 1.4 x 1.1 cm.\u003C\u002Fdd>\n\u003Cdd>A gemmy and lustrous cluster of tabular, tapered tanzanite crystals. The primary crystals have very gemmy terminations on this pristine, complete-all-around specimen. The bit of matrix on one side adds character. The 2-sided, pleochroism color of this not heat-treated crystal is classic: the A, frontal face is a beautiful blue; and the B, side faces are a vivid purple. The base is too heavily included to give C-axis color. The termination is very gemmy and highly representative of the species and locale. Weighs 35.22 carats or just over 7 grams.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",370,600,{"id":139,"source_url":140,"license_code":123,"credit_html":141,"title":142,"description":143,"author":127,"original_width":144,"original_height":145},81982,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10170892","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10170892\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-271344.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa> (Var.: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FTanzanite\" class=\"extiw\" title=\"en:Tanzanite\">Tanzanite\u003C\u002Fa>)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 7.2 x 3.2 x 2.3 cm.\u003C\u002Fdd>\n\u003Cdd>This is an unusually fine specimen in several regards. Firstly, it has superb color - probably the prime attribute you first look for in a world-class tanzanite. All three colors of a natural trichroic tanzanite crystal are represented in strength: violet purple, blue, and a rich magenta-red along the c-axis. In the best tanzanites, to my opinion, some of the red from the c-axis (long axis) transmission of light bleeds over and is seen in horizontal planes, from one side or another, as in this case. Many larger tanzanites are too big or too opaque for the red color to transmit through the whole specimen when the piece is lit by a light aligned from the top or bottom: not so with this piece, where the deep red color not only shines out the top when lit from below, but does spill over a bit and mix with the purple hue form the sides. Secondly, it has top glassy lustre and internal brightness both (many larger tanzanites lack one or another feature). Lastly, this piece has excellent geometry. The mine produces singles in abundance, and few clusters, with a different look to them. This piece is a rare, natural doublet cluster, with great symmetry. The twin peaks of the piece are both very gemmy. Cushioned between them, in the crevasse, is a small prehnite ball for accent. This specimen is illustrated with a small and elite group of well-known, important specimens from the mine in the central photo folio of the recent special journal\u002Fbook dedicated to Merelani's riches, MINERALOGICAL RECORD, Nov-Dec 2009. Weighs 113 grams.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",768,902,{"id":147,"source_url":148,"license_code":123,"credit_html":149,"title":150,"description":151,"author":127,"original_width":152,"original_height":153},81983,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10171505","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10171505\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-274990.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa> (Var.: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FTanzanite\" class=\"extiw\" title=\"en:Tanzanite\">Tanzanite\u003C\u002Fa>)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.4 x 1.7 x 0.8 cm.\u003C\u002Fdd>\n\u003Cdd>Rare, bi-colored tanzanites were prominently featured in the recent Merelani Hills article in the Mineralogical Record. This striking gem crystal has an interesting, double termination above the pastel yellow-green, base. The upper portion of the crystal displays the classic, 3-way pleochroism found in many zoisites: the A-axis faces are a pleasing purple; the B-axis faces are light blue; and the vertical C-axis show shades of red, even with the yellow-green base. This is a much in demand, highly representative rarity.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",371,549,{"id":155,"source_url":156,"license_code":123,"credit_html":157,"title":158,"description":159,"author":127,"original_width":160,"original_height":137},81984,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172905","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172905\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-284722.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa> (Var.: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FTanzanite\" class=\"extiw\" title=\"en:Tanzanite\">Tanzanite\u003C\u002Fa>)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.6 x 1.0 x 0.9 cm.\u003C\u002Fdd>\n\u003Cdd>This strongly dichroic tanzanite crystal is 47 carats (about 9.5 grams). It looks blue from one side, purple from the other - rotating 90 degrees to change colors. Of course, this is a product of heat treating to enhance this dichroism (commonly done for this material at the source), but this is considered acceptable in tanzanite crystals because of the obvious and interesting result. It has the obviously desirable qualities of intense color (and color change), great luster, sharp equant form, a superb termination, and excellent gemminess in particular atop. In person, the purple comes through much better than in photos.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",275,{"id":162,"source_url":163,"license_code":123,"credit_html":164,"title":165,"description":166,"author":127,"original_width":167,"original_height":168},81985,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418805","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418805\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-0224-06f.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 7 x 2.5 x 1.5 cm\n\u003Cdl>\u003Cdt>Tanzanite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is an intensely-colored crystal of natural hues, which run to deep purple (front) and deep blue (side) on the A and B axes. It is NOT heat treated to enhance and conform the colors to gem industry standard. This crystal has outstanding lustre, like glass; and a sharp, interesting, bifurcated termination. The sharp form looks like that of a slab of blue glass, it is so equant and even on its faces. The piece is complete-all-around except for a few slight dings and a contact on the back side. What is really unusual about the piece is that the red\u002Fmaroon color on the c-axis actually slips over and shows from the front, when it is lit strongly. Thus, you see red in the bottom of the front face, which should otherwise be a pure purple. The intermixing of the colors is not a common event in tanzanites, and here it is very pronounced. Combined with the sharp, interesting termination (most have just a simple point), the intense colors make this a showy piece, of good size.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",451,800,{"id":170,"source_url":171,"license_code":123,"credit_html":172,"title":173,"description":166,"author":127,"original_width":174,"original_height":168},81986,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418813","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418813\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-0224-06b.jpg",385,{"id":176,"source_url":177,"license_code":123,"credit_html":178,"title":179,"description":180,"author":127,"original_width":168,"original_height":181},81987,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418818","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418818\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-0224-05d.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 3.9 x 2.6 x 1.6 cm\n\u003Cdl>\u003Cdt>Tanzanite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This specimen is as jewel-like as you can get for an uncut tanzanite, with absolutely superb glassy lustre that looks polished, combined with a complex sharp termination and a rich natural color. This kind of clarity and perfection of form, combined with the excellent lustre and the color scheme here, has come out only in small amounts of crystals, generally of about this size or smaller, from Block D in recent years. Admittedly, the material of this particular style is not the most intense blue, or purple, or red (on c-axis); but rather has more subtle pink\u002Fmaroon coloring on the long axis and a lighter pastel hue of blue. It has not been heat-treated, which emphasizes and conforms the blue and purple hues to a standard, while squelching the natural red or pink color on the c-axis. It is pristine and complete-all-around. This is, due to the lighter color palette, not the traditional \"major\" tanzanite of intense blue (and there, heat treated pieces are acceptable to me when disclosed as such), but rather a more rare and subtle crystal that to me is all the more desirable for its unique qualities. Weighs 32 grams.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",640,{"id":183,"source_url":184,"license_code":123,"credit_html":185,"title":186,"description":180,"author":127,"original_width":187,"original_height":168},81988,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418823","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418823\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-0224-05c.jpg",431,{"id":189,"source_url":190,"license_code":123,"credit_html":191,"title":192,"description":180,"author":127,"original_width":193,"original_height":168},81989,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418824","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418824\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-0224-05a.jpg",690,{"id":195,"source_url":196,"license_code":123,"credit_html":197,"title":198,"description":199,"author":127,"original_width":200,"original_height":201},81990,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442881","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442881\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-05edd293ac.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 8.1 x 2.0 x 1.4 cm\n\u003Cdl>\u003Cdt>Zoisite var. Tanzanite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A VERY showy, very blue, natural tanzanite that shows well the purple and blue dichroism inherent in the species from this locality. It is either natural in color or lightly heated to enhance the blue hue (a common practice there and considered acceptable by many collectors if price is adjusted accordingly). The purple hue is not as intense and is difficult to photograph. The crystal does have some attached matrix, of graphite. The crystal has a superb, tapered termination , most unusual for tanzanites which tend to end in more blunt chisel-shaped terminations.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",211,400,{"id":203,"source_url":204,"license_code":123,"credit_html":205,"title":206,"description":207,"author":127,"original_width":208,"original_height":137},81992,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447459","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447459\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-dtn8a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 2.2 x 1.6 x 1 cm (40 carats)\n\u003Cdl>\u003Cdt>Tanzanite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is a superb thumbnail of a gemmy, lustrous, tanzanite crystal, displaying tri-chroism (three disparate colors: purple, blue, red, each in a different axis or plane).This is among the finest untreated and naturally colored thumbnails of this species I have seen. The third color is the proof - the treated ones do not have red on teh long axis. Also, most natrual ones have not this intense blue color in small sizes. this one, however, does!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",477,{"id":210,"source_url":211,"license_code":123,"credit_html":212,"title":213,"description":214,"author":127,"original_width":215,"original_height":201},81993,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452076","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452076\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-m06-16b.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 3.5 x 2.8 x 1.7 cm\n\u003Cdl>\u003Cdt>Tanzanite (natural!)\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is a natural tanzanite with excellent blue , purple dichroism. The lustre is superb, glassy, and top quality. It has also exceptionally well-formed faces and is complete all around, 360 degrees. This specimen, for quality of aesthetics , is hard to beat in this price and size range! Note also the gemminess...there is substantial cutting and facet rough value here. The matrix at the bottom perhaps acts to squelch the red c-axis color that might otherwise be present in natural tanzanites...for some reason that third color is not present here, but at the same time i am sure the crystal is not treated due to the shade of each hue (the purple would disappear and go blue in a treated crystal).\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",375,{"id":217,"source_url":218,"license_code":123,"credit_html":219,"title":220,"description":221,"author":127,"original_width":222,"original_height":201},81994,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10464232","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10464232\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-t06-124c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 8 x 3 x 1.3 cm (68 grams)\n\u003Cdl>\u003Cdt>Tanzanite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>THis is a whopper of a large crystal of tanzanite, showing an exceptionally sharp, steep termination and good color throughout. Uniform blue color like this indicates that, like most specimens of the material, it has been heat-treated to intensify that hue. However, this is considered par for the course for most tanzanites and is one of the few times in minerals I accept such treatment for the beauty it creates, so long as it is disclosed. The crystal is complete on front and sides, contacted only a bit on the backside. The steep termination is awesome from any angle and draws the eye. This is a giant for the price, too, considering what has been available of late (not much!).\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",180,{"id":224,"source_url":225,"license_code":123,"credit_html":226,"title":227,"description":228,"author":127,"original_width":229,"original_height":230},81995,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10471736","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10471736\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-tanzanite-tanzaniap.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 9 x 6 x 4 cm\n\u003Cdl>\u003Cdt>TANZANITE\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Rarely do you find pristine gem tanzanite crystals, in this size, with such sharpness to them. High lustre is common enough, but the glassy finish, the top reflective lustre as you see here (note there are no areas where it does not reflect, showing a more matte surface), is uncommon. More rare is to find such crystals with a high gem value content AND naturally intense colors on all 3 axes, without being heat treated first. More rare yet - well, try finding TWO such fine crystals, each pristine, similar in size, and both with the top color intensity on all 3 axes - and stick them together. This shockingly 3-dimensional cluster is just such a beast: a cluster of two of the finest intense-colored natural tanzanite crystals I have seen. They are joined in such a manner as to maximize the 3-dimensional geometry of the specimen, spacing the crystal masses from each other to give the piece a maximal presence. Note in the side-by-side photo how the relational geometry between the two crystals is so dramatic in each axis, that the photos, shown alone, actually LOOK LIKE THEY ARE OF DIFFERENT SPECIMENS. This is an Iconic mineral specimen in every sense, memorable among a huge crowd of good things on the market, and should becaome one of the key pieces in a collection. PHOTOS BY JOSEPH BUDD. Comes with custom base for display. Illustrated, Rocks & Minerals article on dichroic minerals\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",2912,4368,{"id":232,"source_url":233,"license_code":234,"credit_html":235,"title":236,"description":237,"author":238,"original_width":239,"original_height":240},81997,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=42239156","CC BY-SA 4.0","GeologMax, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=42239156\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Tanzanit light.jpg","This is sample of Tanzanite from my stone collection.","GeologMax",2704,3040,{"id":242,"source_url":243,"license_code":234,"credit_html":244,"title":245,"description":246,"author":247,"original_width":248,"original_height":249},81999,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=151839497","Julio nerd da química, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=151839497\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Tanzanita 2.png","A tanzanita é uma pedra preciosa bastante rara, uma forma de zoisita contendo impurezas de vanádio tanto tetravalente (vanadila) quanto trivalente, os quais são responsáveis pela sua cor azul-violeta profunda.","Julio nerd da química",967,1545,{"id":251,"source_url":252,"license_code":123,"credit_html":253,"title":254,"description":255,"author":127,"original_width":256,"original_height":201},21639,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10162682","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10162682\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-224733.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.1 x 1.4 x 1.3 cm.\u003C\u002Fdd>\n\u003Cdd>A very gemmy, extremely colorful piece of this rare zoisite varietal which seems to turn up only very rarely, in small pockets, at this series of mines and pits famous for blue Tanzanite. This is an excellent piece with extremely glassy lustre, better than indicated in the photo, and so brilliant that it looks polished (but is not). Weight 86 carats.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",257,{"id":258,"source_url":259,"license_code":123,"credit_html":260,"title":261,"description":262,"author":263,"original_width":168,"original_height":264},83800,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=422495","No machine-readable author provided. Vzb83~commonswiki assumed (based on copyright claims)., via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=422495\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anyolite tanzanite.jpg","\u003Ca href=\"\u002F\u002Fcommons.wikimedia.org\u002Fwiki\u002FCategory:Anyolite\" title=\"Category:Anyolite\"> Anyolite\u003C\u002Fa> (left: Chrome-zoisite, Ruby and Tschermakite) and \u003Ca href=\"\u002F\u002Fcommons.wikimedia.org\u002Fw\u002Findex.php?title=Tanzanite&action=edit&redlink=1\" class=\"new\" title=\"Tanzanite (page does not exist)\">tanzanite\u003C\u002Fa> (right)","No machine-readable author provided. Vzb83~commonswiki assumed (based on copyright claims).",567,{"id":266,"source_url":267,"license_code":123,"credit_html":268,"title":269,"description":270,"author":127,"original_width":271,"original_height":272},87342,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10126404","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10126404\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-38147.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Alchuri (Alchori; Aschudi), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigar_Valley\" class=\"extiw\" title=\"en:Shigar Valley\">Shigar Valley\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSkardu_District\" class=\"extiw\" title=\"en:Skardu District\">Skardu District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBaltistan\" class=\"extiw\" title=\"en:Baltistan\">Baltistan\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGilgit-Baltistan\" class=\"extiw\" title=\"en:Gilgit-Baltistan\">Northern Areas\u003C\u002Fa>, Pakistan (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2528.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A gem crystal of zoisite (same thing as \"tanzanite\"), terminated, from new finds in Pakistan. This is the natural color for this locality. The ones from Tanzania are typically heated to bring out the blue color. 2.2 x .9 x .4 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",288,500,{"id":274,"source_url":275,"license_code":123,"credit_html":276,"title":277,"description":278,"author":127,"original_width":256,"original_height":201},87349,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466073","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466073\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-t5118b.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 3.1 x 1.4 x 1.3 cm\n\u003Cdl>\u003Cdt>Zoisite or yellow Tanzanite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A VERY GEMMY, extremely colorful piece of this rare zoisite varietal which seems to turn up only very rarely, in small pockets, at this series of mines and pits famous for blue Tanzanite. This is an excellent piece with extremely glassy lustre, better than indicated in the pics and so brilliant that it looks polished (but is not!). Weight 86 carats!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":280,"source_url":281,"license_code":123,"credit_html":282,"title":283,"description":284,"author":127,"original_width":168,"original_height":285},81991,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447111","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447111\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Calcite-Zoisite-denv08-08a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalcite\" class=\"extiw\" title=\"en:Calcite\">Calcite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 6.5 x 5.7 x 4.2 cm\n\u003Cdl>\u003Cdt>Tanzanite on Calcite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>One rarely sees matrix tanzanites! This one features an approximately 6 cm crystal with natural blue-toned color, preched in calcite! Adjacent is a broken, but colorful, tanzanite crystal to the left tha tbalances the piece nicely and adds visual color splash. The main crystal is a little rough at the termination but it IS complete, just contacted. The calcite contrast is unusual and enhances the color. Very 3-dimensional, interesting specimen. Comes with custom base.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",544,{"id":287,"source_url":288,"license_code":123,"credit_html":289,"title":290,"description":291,"author":107,"original_width":108,"original_height":109},63844,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=21697489","Parent Géry, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=21697489\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Laumontite, tanzanite, graphite 1.JPG","crystals of laumontite, crystals of zoisite var. tanzanite, crystals of graphite : Merelani Hills (Mererani), Lelatema Mts, Arusha Region, Tanzania",{"id":293,"source_url":294,"license_code":123,"credit_html":295,"title":296,"description":297,"author":107,"original_width":298,"original_height":109},81996,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=21697491","Parent Géry, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=21697491\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Tanzanite, graphite, laumontite.jpg","crystals of zoisite var. tanzanite, crystals of graphite, crystals of laumontite : Merelani Hills (Mererani), Lelatema Mts, Arusha Region, Tanzania",4000,{"id":300,"source_url":301,"license_code":123,"credit_html":302,"title":303,"description":304,"author":127,"original_width":187,"original_height":137},21637,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10124193","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10124193\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-33616.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A stunning, gemmy, \"yellow tanzanite\" crystal. It is not know why these specimens trickling out now lack the blue color component usually found in tanzanite, but they sure are pretty nonetheless. 13.58 carats 1.7 x 1 x 0.8 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":306,"source_url":307,"license_code":123,"credit_html":308,"title":309,"description":278,"author":127,"original_width":310,"original_height":137},21643,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466072","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466072\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zoisite-t5118a.jpg",343,{"id":312,"source_url":313,"license_code":123,"credit_html":314,"title":315,"description":316,"author":127,"original_width":317,"original_height":137},87345,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10134930","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10134930\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Grossular-Zoisite-53086.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGrossular\" class=\"extiw\" title=\"en:Grossular\">Grossular\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa> (Var.: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FTanzanite\" class=\"extiw\" title=\"en:Tanzanite\">Tanzanite\u003C\u002Fa>)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>This superb miniature is from a rare, small find of about 6 years back. It features mint-green grossular garnets ON tanzanite matrix! The garnets are good in and of themselves, and of quite high quality for the location. The combination, though, is just unique so far as i know. 3.5 x 2.7 x 2 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",597,{"id":319,"source_url":320,"license_code":123,"credit_html":321,"title":322,"description":323,"author":127,"original_width":324,"original_height":168},87350,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466390","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466390\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Prehnite-Zoisite-tcp2-48a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPrehnite\" class=\"extiw\" title=\"en:Prehnite\">Prehnite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZoisite\" class=\"extiw\" title=\"en:Zoisite\">Zoisite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Merelani Hills (Mererani), Lelatema Mts, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArusha_Region\" class=\"extiw\" title=\"en:Arusha Region\">Arusha Region\u003C\u002Fa>, Tanzania (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5699.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 3.5 x 2.9 x 2.0 cm\n\u003Cdl>\u003Cdt>Prehnite on Tanzanite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A larger miniature with very 3-dimensional form, and these nice clusters of prehnite perched upon shards of tanzanite that run underneath. Very unusual, and a good amount of prehnite for the price, from this find.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",755,[],[327,328,329,330,331,332,333,334,335,336,337,338],"Tanjeloffit","Tanjeloffita","Tanjeloffite","Tansaniitti","Tansanit","Tanzanaiti","Tanzaniet","Tanzanit","Tanzanita","Tanzanitas","Tanzanitt","Transanit",[],{"history":8,"applications":8}]