[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:1418":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":11,"polytypeof":11,"groupid":11,"weighting":12,"nolocadd":13,"blacklisted":13,"mindat_formula":14,"mindat_formula_note":11,"ima_formula":15,"elements":16,"sigelements":22,"key_elements":23,"impurities":24,"cim":25,"ima_status":26,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":29,"discovery_year":30,"strunz10ed1":31,"strunz10ed2":32,"strunz10ed3":33,"strunz10ed4":34,"dana8ed1":35,"dana8ed2":36,"dana8ed3":37,"dana8ed4":37,"csystem":38,"cclass":39,"spacegroup":40,"spacegroupset":41,"a":42,"b":43,"c":44,"alpha":41,"beta":45,"gamma":41,"aerror":39,"berror":46,"cerror":39,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":47,"csmetamict":13,"commentcrystal":11,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":48,"tlform":11,"hmin":49,"hmax":49,"hardtype":11,"vhnmin":50,"vhnmax":41,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":51,"dmeas2":52,"dcalc":53,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":54,"commentluster":55,"diapheny":56,"streak":57,"colour":58,"commentcolor":11,"colors":59,"streak_colors":65,"luminescence":11,"uv":11,"cleavage":66,"cleavagetype":67,"fracturetype":68,"tenacity":69,"commentbreak":11,"opticaltype":70,"opticalsign":71,"opticalalpha":72,"opticalalpha2":41,"opticalalphaerror":11,"opticalbeta":73,"opticalbeta2":41,"opticalbetaerror":11,"opticalgamma":74,"opticalgamma2":41,"opticalgammaerror":11,"opticalomega":41,"opticalomega2":41,"opticalomegaerror":11,"opticalepsilon":41,"opticalepsilon2":41,"opticalepsilonerror":11,"opticaln":41,"opticaln2":41,"opticalnerror":11,"optical2vcalc":75,"optical2vcalc2":41,"optical2vcalcerror":11,"optical2vmeasured":76,"optical2vmeasured2":41,"optical2vmeasurederror":11,"rimin":77,"rimax":78,"opticaldispersion":79,"opticalpleochroism":80,"opticalpleochorismdesc":81,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":82,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":83,"other":84,"industrial":11,"occurrence":11,"otheroccurrence":85,"type_specimen_store":86,"description_short":11,"aboutname":87,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":88,"reviewed_at":11,"variety_of":11,"varieties":89,"group_members":90,"associates":91,"confused_with":92,"type_localities":93,"occurrence_total":98,"citations":99,"images":259,"structures":480,"synonyms":502,"language_names":507,"wikidata_qid":635,"texts":636},1418,"1:1:1418:8","8671ded2-ae43-4e3b-90fb-b4ec3ab6d578","Euclase","Ecs",0,"mineral",null,4730,false,"BeAl(SiO\u003Csub>4\u003C\u002Fsub>)(OH)","BeAlSiO\u003Csub>4\u003C\u002Fsub>(OH)",[17,18,19,20,21],"Al","Be","Si","O","H",[17,18,19,20,21],[18],",Zn,F,Ca,Mg,Fe,Na,","16.6.2",[27,28],"APPROVED","GRANDFATHERED",1792,"1792","9","A","E","10","52","2","1","Monoclinic",5,14,"0","4.763","14.29","4.618","100.25",2,4,"Prismatic crystals.\r\n\r\nForms include \u003Cmi>{100}, {010}, {001}(rare), {20·1·0}, {16·1·0}, 910}, {410}, {320}, {430}, {650}, {110}, {9·10·0}, {670}, {340}, {230}, {590}, {120}, {130}, {_104}, {_102}, {_101}, {011}, {0·11·6}, {021}, {0·11·4}, {031}, {041}, {061}, {111}, {332}, {_112}, {_111}, {221}, {323}, {_1_2·3·1}, {211}, {124}, {121}, {141}, {155}, {151}, {_231}, {_6·10·1}, {_593}, {_121}, {_131}, {_142}, {_162}, {_152}, {_2·13·5}, {_2·13·4}, {_173}, {_182}, {_197}.\u003C\u002Fmi>",7.5,"1310","2.99","3.1","3.115","Vitreous","Somewhat pearly on cleavage","Transparent,Translucent","White","Colorless, white, pale green to deep yellowish green, greenish blue, pale blue to deep blue, pink",[60,61,62,63,64],"colorless","white","green","blue","pink",[61],"Perfect on {010}. Imperfect on {110}, {001}.","Perfect","Conchoidal","brittle","Biaxial","+","1.652","1.655","1.671","48","50",1.652,1.671,"none","Visible","Shades of deep blue","Z ∧ c = 41°.","In a closed tube, gives off water when strongly heated. Before the blowpipe, cracks and whitens, throws out fragments; fuses at 5.5 to a white enamel.","No reaction to acids.","Decomposition of beryl in pegmatites and alpine veins","Natural History Museum, Paris, France. The IMA Commission on Museums gives the number as 3300, the Handbook of Mineralogy gives 3303.","Named by René Just Haüy deriving from the Greek εὖ, for 'easily', and κλάσις, for 'fracture', describing the mineral's perfect cleavage.","2025-08-11 12:14:20",[],[],[],[],[94],{"id":95,"txt":96,"latitude":11,"longitude":11,"country":97},423,"Ouro Preto, Minas Gerais, Brazil","Brazil",119,[100,103,107,111,114,118,121,126,131,135,140,144,148,153,157,161,166,170,174,178,183,187,190,195,199,204,209,213,217,222,227,232,237,241,246,250,254],{"id":101,"year":29,"html":102,"doi":11},16108744,"Haüy, R.J. (1792) De l´euclase. Observations sur la Physique, sur l’Histoire Naturelle et sur les Arts: 41: 155-156.",{"id":104,"year":105,"html":106,"doi":11},16108745,1842,"Shepard, C.U. (1842) On Washingtonite (a new Mineral), the discovery of Euclase in Connecticut, and additional notices of the supposed Phenakite of Goshen, and Calstron-baryte of Schoharie, NY. American Journal of Science and Arts: 43(2): 364.",{"id":108,"year":109,"html":110,"doi":11},16108746,1853,"Mallet, J.W. (1853) Analysis of euclase. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science: 5(30): 127-127.",{"id":112,"year":109,"html":113,"doi":11},16108747,"Dana, J.D. (1853) On the Isomorphism of Sphene and Euclase. American Journal of Science and Arts: 16(46): 96.",{"id":115,"year":116,"html":117,"doi":11},16108748,1882,"Guyot, M. (1882) Description of a Crystal of Euclase belonging to my Collection. Mineralogical Magazine: 5(23): 107-108.",{"id":119,"year":116,"html":120,"doi":11},16108749,"Des Cloizeaux, A. (1882) Note sur quelques formes nouvelles de l'euclase du Brésil. Bulletin de Minéralogie: 5(9): 317-320.",{"id":122,"year":123,"html":124,"doi":125},104841,1933,"Biscoe, J., Warren, B. E. (1933) The Structure of Euclase HBeAlSiO5. \u003Ci>Zeitschrift für Kristallographie\u003C\u002Fi>,  86 (1). 292-297 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1524\u002Fzkri.1933.86.1.292'>doi:10.1524\u002Fzkri.1933.86.1.292\u003C\u002Fa>","10.1524\u002Fzkri.1933.86.1.292",{"id":127,"year":128,"html":129,"doi":130},7193,1934,"Spencer, L. J. (1934) Beryllium minerals (euclase and phenakite) from Africa. \u003Ci>Mineralogical Magazine and Journal of the Mineralogical Society\u003C\u002Fi>,  23 (146) 616-623 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1934.023.146.05'>doi:10.1180\u002Fminmag.1934.023.146.05\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_23\u002F23-146-616.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1934.023.146.05",{"id":132,"year":133,"html":134,"doi":11},16108753,1953,"Strand, T. (1953) Euclase from Iveland, occurring as an alteration product of beryl. Norsk Geol Tidssk: 31: 1-5.",{"id":136,"year":137,"html":138,"doi":139},106318,1959,"Mrose, Mary E., von Knorring, Oleg (1959) The mineralogy of väyrynenite, (Mn,Fe)Be(PO\u003Csub>4\u003C\u002Fsub>)(OH) \u003Ci>Zeitschrift für Kristallographie - Crystalline Materials\u003C\u002Fi>,  112 (1) 275-288 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1524\u002Fzkri.1959.112.1-6.275'>doi:10.1524\u002Fzkri.1959.112.1-6.275\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002Fzk\u002Fvol112\u002FZK112_275.pdf' class='refpdflink'>\u003C\u002Fa>","10.1524\u002Fzkri.1959.112.1-6.275",{"id":141,"year":142,"html":143,"doi":11},523636,1961,"Sharp, William N. (1961) Euclase in greisen pipes and associated deposits, Park County, Colorado. \u003Ci>American Mineralogist\u003C\u002Fi>,  46 (11-12) 1505-1508 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM46\u002FAM46_1505.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":145,"year":142,"html":146,"doi":147},3134574,"Bakakin, V. V., Al'tshuller, V. M. (1961) The crystal structure of euclase. \u003Ci>Journal of Structural Chemistry\u003C\u002Fi>, 2 (1). 59-60 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fbf00744859'>doi:10.1007\u002Fbf00744859\u003C\u002Fa>","10.1007\u002Fbf00744859",{"id":149,"year":150,"html":151,"doi":152},106728,1962,"Mrose, Mary E., Appleman, Daniel E. (1962) The crystal structures and crystal chemistry of väyrynenite, (Mn,Fe)Be(PO\u003Csub>4\u003C\u002Fsub>)(OH), and euclase, AlBe(SiO\u003Csub>4\u003C\u002Fsub>)(OH) \u003Ci>Zeitschrift für Kristallographie - Crystalline Materials\u003C\u002Fi>,  117 (1) 16-36 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1524\u002Fzkri.1962.117.1.16'>doi:10.1524\u002Fzkri.1962.117.1.16\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002Fzk\u002Fvol117\u002FZK117_16.pdf' class='refpdflink'>\u003C\u002Fa>","10.1524\u002Fzkri.1962.117.1.16",{"id":154,"year":155,"html":156,"doi":11},16108758,1964,"Knorring, O., Sahama, T.G., Saari, E. (1964) A note on euclase from Muiane mine, Alto Ligonha, Mozambique. Bulletin de la Commission géologique de Finlande: 36(215): 143-145.",{"id":158,"year":159,"html":160,"doi":11},16108759,1967,"Egorov, I. (1967) Euclase from quartz chlooritic zones of modified granites of Yakutia. Doklady Akademii Nauk SSSR: 172(2): 433.",{"id":162,"year":163,"html":164,"doi":165},1079900,1969,"Bastos, Francisco Muller (1969) Euclase from Minas Gerais, Brazil. \u003Ci>The Journal of Gemmology\u003C\u002Fi>,  11 (8) 312-314 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.15506\u002Fjog.1969.11.8.312'>doi:10.15506\u002Fjog.1969.11.8.312\u003C\u002Fa>","10.15506\u002Fjog.1969.11.8.312",{"id":167,"year":168,"html":169,"doi":11},16108761,1971,"Kosnar, R.A. (1971) Euclase. Rocks & Minerals: 46(7-8): 470-470.",{"id":171,"year":172,"html":173,"doi":11},527078,1978,"Burt, Donald M. (1978) Multisystems analysis of beryllium mineral stabilities: the system BeO-Al2O3-SiO2-H2O. \u003Ci>American Mineralogist\u003C\u002Fi>,  63 (7-8) 664-676 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM63\u002FAM63_664.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":175,"year":176,"html":177,"doi":11},527383,1980,"Graziani, Giorgio, Guidi, Giolj (1980) Euclase from Santa do Encoberto, Minas Gerais, Brazil. \u003Ci>American Mineralogist\u003C\u002Fi>,  65 (1-2) 183-187 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM65\u002FAM65_183.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":179,"year":180,"html":181,"doi":182},403515,1985,"Hanson, Alain (1985) Découverte d'euclase dans un filon de quartz à Ottré, massif de Stavelot, Belgique. \u003Ci>Bulletin de Minéralogie\u003C\u002Fi>,  108 (2). 139-143 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3406\u002Fbulmi.1985.7863'>doi:10.3406\u002Fbulmi.1985.7863\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Fwww.persee.fr\u002Fdoc\u002Fbulmi_0180-9210_1985_num_108_2_7863?pdf' class='refpdflink'>\u003C\u002Fa>","10.3406\u002Fbulmi.1985.7863",{"id":184,"year":185,"html":186,"doi":11},16108764,1986,"Hazen, R.M., Au, A.Y., Finger, L.W. (1986) High-pressure crystal chemistry of beryl (Be3Al2Si6O18) and euclase (BeAlSiO4OH). American Mineralogist: 71(7-8): 977-984.",{"id":188,"year":185,"html":189,"doi":11},17094720,"Hemingway, Bruce S., Barton, Mark D., Robie, R. A., Haselton, H. T. (1986) Heat capacities and thermodynamic functions for beryl, Be\u003Csub>3\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>Si\u003Csub>6\u003C\u002Fsub>O\u003Csub>18\u003C\u002Fsub>, phenakite, Be\u003Csub>2\u003C\u002Fsub>SiO\u003Csub>4\u003C\u002Fsub>, euclase, BeAlSiO\u003Csub>4\u003C\u002Fsub>(OH), bertrandite, Be\u003Csub>4\u003C\u002Fsub>Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>(OH)\u003Csub>2\u003C\u002Fsub>, and chrysoberyl, BeAl\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>. \u003Ci>American Mineralogist\u003C\u002Fi>,  71 (3-4) 557-568 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM71\u002FAM71_557.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":191,"year":192,"html":193,"doi":194},151581,1987,"Hofmeister, A. M., Hoering, T. C., Virgo, D. (1987) Vibrational spectroscopy of beryllium aluminosilicates: Heat capacity calculations from band assignments. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  14 (3) 205-224 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fbf00307985'>doi:10.1007\u002Fbf00307985\u003C\u002Fa>","10.1007\u002Fbf00307985",{"id":196,"year":197,"html":198,"doi":11},16108766,1992,"Demartin, F., Gramaccioli, C.M., Pilati, T. (1992) A first occurrence of euclase in the Swiss Alps: Discovery and refinement of the crystal structure. Schweizerische Mineralogische und Petrographische Mitteilungen: 72: 159-165.",{"id":200,"year":201,"html":202,"doi":203},1081159,1996,"Duroc-Danner, J.M. (1996) Euclase from Colombia showing three-phase inclusions. \u003Ci>The Journal of Gemmology\u003C\u002Fi>,  25 (3) 175-176 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.15506\u002Fjog.1996.25.3.175'>doi:10.15506\u002Fjog.1996.25.3.175\u003C\u002Fa>","10.15506\u002Fjog.1996.25.3.175",{"id":205,"year":206,"html":207,"doi":208},1081267,1998,"Stocklmayer, Susan (1998) Blue euclase from Zimbabwe — a review. \u003Ci>The Journal of Gemmology\u003C\u002Fi>,  26 (4) 209-218 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.15506\u002Fjog.1998.26.4.209'>doi:10.15506\u002Fjog.1998.26.4.209\u003C\u002Fa>","10.15506\u002Fjog.1998.26.4.209",{"id":210,"year":211,"html":212,"doi":11},16108769,2000,"Notari, F., Boillat, P.Y., Grobon, C. (2000) L'euclase bleu-verte de Colombie. Revue de gemmologie AFG: 140: 18-20.",{"id":214,"year":215,"html":216,"doi":11},16964170,2001,"(2001) Euclase. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Feuclase.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":218,"year":219,"html":220,"doi":221},10559820,2002,"Shannon, Robert D., Shannon, Ruth C., Medenbach, Olaf, Fischer, Reinhard X. (2002) Refractive Index and Dispersion of Fluorides and Oxides. \u003Ci>Journal of Physical and Chemical Reference Data\u003C\u002Fi>,  31 (4) 931-970 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1063\u002F1.1497384'>doi:10.1063\u002F1.1497384\u003C\u002Fa>","10.1063\u002F1.1497384",{"id":223,"year":224,"html":225,"doi":226},153288,2006,"Guedes, K. J., Krambrock, K., Pinheiro, M. V. B., Menezes Filho, L. A. D. (2006) Natural iron-containing blue and colorless euclase studied by electron paramagnetic resonance. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  33 (8) 553-557 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00269-006-0102-1'>doi:10.1007\u002Fs00269-006-0102-1\u003C\u002Fa>","10.1007\u002Fs00269-006-0102-1",{"id":228,"year":229,"html":230,"doi":231},153443,2008,"Krambrock, K., Guedes, K. J., Pinheiro, M. V. B. (2008) Chromium and vanadium impurities in natural green euclase and their relation to the color. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  35 (7) 409-415 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00269-008-0235-5'>doi:10.1007\u002Fs00269-008-0235-5\u003C\u002Fa>","10.1007\u002Fs00269-008-0235-5",{"id":233,"year":234,"html":235,"doi":236},153518,2009,"Dias, Lorena N., Pinheiro, Maurício V. B., Krambrock, Klaus (2009) Radiation-induced defects in euclase: formation of O− hole and Ti3+ electron centers. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  36 (9) 519-525 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00269-009-0297-z'>doi:10.1007\u002Fs00269-009-0297-z\u003C\u002Fa>","10.1007\u002Fs00269-009-0297-z",{"id":238,"year":239,"html":240,"doi":11},16108773,2014,"Tang, J., Liu, X., Xiong, Z., He, Q., Shieh, R. S., Wang, H. (2014) High temperature X-ray diffraction, DSC-TGA, polarized FTIR and high pressure Raman spectroscopy studies on euclase. Bulletin of Mineralogy, Petrology and Geochemistry: 33(3): 289-298.",{"id":242,"year":243,"html":244,"doi":245},31681,2016,"Francis, Carl A., Cook, Robert B. (2016) Connoisseur's Choice: Euclase, La Marina Mine, Municipio de Pauna, Boyacá, Colombia. \u003Ci>Rocks & Minerals\u003C\u002Fi>,  91 (6) 542-547 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1080\u002F00357529.2016.1217469'>doi:10.1080\u002F00357529.2016.1217469\u003C\u002Fa>","10.1080\u002F00357529.2016.1217469",{"id":247,"year":248,"html":249,"doi":11},16046101,2017,"Stocklmayer, S.M. (2017) A new occurrence of euclase in Western Australia. Australian Journal of Mineralogy: 18(2): 39.",{"id":251,"year":252,"html":253,"doi":11},16104251,2020,"Gilles-Guéry, L. (2020) Étude spectroscopique de la couleur des minéraux-gemmes: euclase et béryl. Doctoral dissertation, Sorbonne Université, France.",{"id":255,"year":256,"html":257,"doi":258},16094980,2022,"Gilles-Guéry, Lætitia, Galoisy, Laurence, Schnellrath, Jurgen, Baptiste, Benoit, Calas, Georges (2022) Mn3+ and the pink color of gem-quality euclase from northeast Brazil. \u003Ci>American Mineralogist\u003C\u002Fi>,  107 (3) 489-494 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam-2021-7838'>doi:10.2138\u002Fam-2021-7838\u003C\u002Fa>","10.2138\u002Fam-2021-7838",[260,270,277,284,294,300,305,310,317,322,327,335,340,348,357,363,371,378,386,393,401,409,416,422,429,436,442,450,457,464,471],{"id":261,"source_url":262,"license_code":263,"credit_html":264,"title":265,"description":266,"author":267,"original_width":268,"original_height":269},8155,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=759403","CC BY-SA 2.5","Eurico Zimbres e Tom Epaminondas, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=759403\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase 1.jpg","A 4 cm crytal of Euclase from Equador, Rio Grande do Norte, Brazil","Eurico Zimbres e Tom Epaminondas",927,828,{"id":271,"source_url":272,"license_code":273,"credit_html":274,"title":7,"description":11,"author":11,"original_width":275,"original_height":276},29683,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F190709","CC BY 4.0","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F190709\" rel=\"noopener\">Department of Geology, TalTech\u003C\u002Fa> via Europeana",1000,663,{"id":278,"source_url":279,"license_code":263,"credit_html":280,"title":281,"description":266,"author":267,"original_width":282,"original_height":283},53845,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=759396","Eurico Zimbres e Tom Epaminondas, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=759396\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase.jpg",812,760,{"id":285,"source_url":286,"license_code":287,"credit_html":288,"title":289,"description":290,"author":291,"original_width":292,"original_height":293},8156,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6520981","Public domain","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6520981\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase 4.jpg","euclase : Karoi District (Urungwe; Hurungwe District), Mashonaland West, Zimbabwe","Géry PARENT",4288,2848,{"id":295,"source_url":296,"license_code":297,"credit_html":298,"title":7,"description":11,"author":11,"original_width":299,"original_height":275},29684,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F164348","CC BY-SA 4.0","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F164348\" rel=\"noopener\">University of Tartu, Natural History Museum\u003C\u002Fa> via Europeana",922,{"id":301,"source_url":302,"license_code":287,"credit_html":303,"title":304,"description":290,"author":291,"original_width":292,"original_height":293},8157,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6521000","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6521000\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase 3.jpg",{"id":306,"source_url":307,"license_code":297,"credit_html":308,"title":7,"description":11,"author":11,"original_width":309,"original_height":275},29685,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F128099","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F128099\" rel=\"noopener\">University of Tartu, Natural History Museum\u003C\u002Fa> via Europeana",996,{"id":311,"source_url":312,"license_code":313,"credit_html":314,"title":315,"description":316,"author":291,"original_width":292,"original_height":293},8158,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=8962201","CC BY-SA 3.0","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=8962201\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase 5.jpg","beryl var. euclase : Alto Do Giz Pegmatite, Equador, Borborema mineral province, Rio Grande Do Norte, Brazil",{"id":318,"source_url":319,"license_code":297,"credit_html":320,"title":7,"description":11,"author":11,"original_width":275,"original_height":321},29686,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F128098","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F128098\" rel=\"noopener\">University of Tartu, Natural History Museum\u003C\u002Fa> via Europeana",777,{"id":323,"source_url":324,"license_code":287,"credit_html":325,"title":326,"description":290,"author":291,"original_width":292,"original_height":293},53846,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6565258","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6565258\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase 6.jpg",{"id":328,"source_url":329,"license_code":313,"credit_html":330,"title":331,"description":332,"author":291,"original_width":333,"original_height":334},8159,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=15926108","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=15926108\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase 7.jpg","euclase : Alto Do Giz Pegmatite, Equador, Borborema mineral province, Rio Grande Do Norte, Brazil",2762,2636,{"id":336,"source_url":337,"license_code":297,"credit_html":338,"title":7,"description":11,"author":11,"original_width":339,"original_height":275},29687,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F164349","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F164349\" rel=\"noopener\">University of Tartu, Natural History Museum\u003C\u002Fa> via Europeana",992,{"id":341,"source_url":342,"license_code":297,"credit_html":343,"title":344,"description":345,"author":346,"original_width":347,"original_height":347},8160,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=130068925","Raimond Spekking, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=130068925\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase. Galileia, Brazil-9103.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa> (Weight: 0.233 g) – Place of discovery: Galileia, Brazil","Raimond Spekking",2379,{"id":349,"source_url":350,"license_code":313,"credit_html":351,"title":352,"description":353,"author":354,"original_width":355,"original_height":356},53847,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120580","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120580\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-21998.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Lost Hope Mine, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMwami\" class=\"extiw\" title=\"en:Mwami\">Mwami\u003C\u002Fa>, Karoi (Urungwe; Hurungwe) District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMashonaland_West_Province\" class=\"extiw\" title=\"en:Mashonaland West Province\">Mashonaland West\u003C\u002Fa>, Zimbabwe (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-29866.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A highly lustrous, sharp and gemmy euclase crystal with vivid shades of blue from the late 1980’s finds. These are immensely desirable for the color, and extremely rare to own, in crystals of this size. Now, more have been found in recent re-working at th emine but they are either smaller in general if of this form, or larger but of a blockier habit. Al went for display aesthetics first and foremost and from the front, this one is a stunner with teh richest blue color I have ever seen in a euclase from here. It does have some contacts on the lower half, but no damage per se. 3.0 x 1.6 x 1.6 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",386,649,{"id":358,"source_url":359,"license_code":297,"credit_html":360,"title":361,"description":345,"author":346,"original_width":362,"original_height":362},8161,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=130068930","Raimond Spekking, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=130068930\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase. Galileia, Brazil-9104.jpg",2645,{"id":364,"source_url":365,"license_code":313,"credit_html":366,"title":367,"description":368,"author":354,"original_width":369,"original_height":370},53848,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10125909","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10125909\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-37036.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEcuador\" class=\"extiw\" title=\"en:Ecuador\">Equador\u003C\u002Fa>, Borborema mineral province, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRio_Grande_do_Norte\" class=\"extiw\" title=\"en:Rio Grande do Norte\">Rio Grande do Norte\u003C\u002Fa>, Northeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-30653.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>This is an unusually rich MATRIX cluster of fine euhedral crystals that clearly show the blue coloration that Euclases are famous for. In this case, it is a very pale pastel blue shade. Complete all around save for the one attachment point, the specimen has many .8 cm crystals with very good luster, form, and color. 2.9 x 2.7 x 2.5 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",661,636,{"id":372,"source_url":373,"license_code":297,"credit_html":374,"title":375,"description":345,"author":346,"original_width":376,"original_height":377},8162,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=130068936","Raimond Spekking, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=130068936\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase. Galileia, Brazil-9105.jpg",2900,2175,{"id":379,"source_url":380,"license_code":313,"credit_html":381,"title":382,"description":383,"author":354,"original_width":384,"original_height":385},53849,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10135604","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10135604\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-57349.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEcuador\" class=\"extiw\" title=\"en:Ecuador\">Equador\u003C\u002Fa>, Borborema mineral province, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRio_Grande_do_Norte\" class=\"extiw\" title=\"en:Rio Grande do Norte\">Rio Grande do Norte\u003C\u002Fa>, Northeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-30653.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A cluster of very rare Brazilian euclase crystals, with the classic blush of blue inside each crystals. These gemmy crystals cover the top of the matrix all the way around. Most of the crystals are around 0.5 cm. 3.1 x 2.6 x 2.2cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",600,514,{"id":387,"source_url":388,"license_code":313,"credit_html":389,"title":390,"description":391,"author":354,"original_width":392,"original_height":384},53850,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139441","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139441\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-118798.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMinas_Gerais\" class=\"extiw\" title=\"en:Minas Gerais\">Minas Gerais\u003C\u002Fa>, Southeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-387.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 7.0 x 1.7 x 1.7 cm.\u003C\u002Fdd>\n\u003Cdd>Euclase crystals are of course very hard to obtain. The really blue and gemmy ones are incredibly rare and expensive. The colorless ones are more common, but still, in this quality and size, are quite uncommon! It has a terrific luster and internal shimmer to it. It is crudely trigonal in form looking down the c axis, with the back side cleaved and the other two sides of the triangle showing lustrous and vertical faces.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",232,{"id":394,"source_url":395,"license_code":313,"credit_html":396,"title":397,"description":398,"author":354,"original_width":399,"original_height":400},53851,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167577","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167577\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-251490.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOuro_Preto\" class=\"extiw\" title=\"en:Ouro Preto\">Ouro Preto\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMinas_Gerais\" class=\"extiw\" title=\"en:Minas Gerais\">Minas Gerais\u003C\u002Fa>, Southeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-423.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 4.7 x 2.3 x 1.5 cm.\u003C\u002Fdd>\n\u003Cdd>A superb, single, doubly-terminated clear and gemmy Euclase from the type locality. This crystal is almost perfectly gemmy all the way through, has excellent luster, and one very sharp termination. The bottom is actually also terminated, just not quite as sharply. This is a 4.7 cm doubly-terminated euclase. Ex. Charlie Key Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",329,500,{"id":402,"source_url":403,"license_code":313,"credit_html":404,"title":405,"description":406,"author":354,"original_width":407,"original_height":408},53852,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10171445","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10171445\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-274943.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEsp%C3%ADrito_Santo\" class=\"extiw\" title=\"en:Espírito Santo\">Espírito Santo\u003C\u002Fa>, Southeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-6395.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 4.0 x 3.3 x 1.5 cm.\u003C\u002Fdd>\n\u003Cdd>This is a stunning gem crystal of euclase, not from Ouro Preto in Minas Gerais, but from Espirito Santo (I had never heard of one from here before). It is transparent, lustrous, and exhibits a light, pastel, sea-foam-blue color. There is minor edge wear on the left side, but the termination is absolutely pristine. A superb example from a surprising new find. I am told this was the best of them, and it certainly was far better than others I did see. The color in the first photo is more accurate...it somehow shows more bluish in the other photo, an artifact.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",347,400,{"id":410,"source_url":411,"license_code":313,"credit_html":412,"title":413,"description":414,"author":354,"original_width":415,"original_height":408},53853,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441498","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441498\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-md93c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBoa_Vista\" class=\"extiw\" title=\"en:Boa Vista\">Boa Vista\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRodrigo_Augusto_da_Silva\" class=\"extiw\" title=\"en:Rodrigo Augusto da Silva\">Rodrigo Silva\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOuro_Preto\" class=\"extiw\" title=\"en:Ouro Preto\">Ouro Preto\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMinas_Gerais\" class=\"extiw\" title=\"en:Minas Gerais\">Minas Gerais\u003C\u002Fa>, Southeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-42756.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 2.3 x 1 x .5 cm\n\u003Cdl>\u003Cdt>Euclase\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Very sharp, water-clear tabular crystal that is highlighted with numerous micro inclusions of something sadly gray. This Euclase has superb luster, and makes a very attractive thumb in person, though i admit it looks grainy in the pics because the gemminess trnasmits the inclusions so much. Well, it is an \"interesting\" if not competitive specimen. 2.3 x 1 x .5 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",165,{"id":417,"source_url":418,"license_code":313,"credit_html":419,"title":420,"description":414,"author":354,"original_width":421,"original_height":408},53854,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441502","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441502\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-md93b.jpg",209,{"id":423,"source_url":424,"license_code":313,"credit_html":425,"title":426,"description":414,"author":354,"original_width":427,"original_height":428},53855,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441503","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441503\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-md93a.jpg",436,800,{"id":430,"source_url":431,"license_code":313,"credit_html":432,"title":433,"description":434,"author":354,"original_width":435,"original_height":428},53856,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447166","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447166\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-denv08-26a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Gachalá, Guavió-Guatéque Mining District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBoyac%C3%A1_Department\" class=\"extiw\" title=\"en:Boyacá Department\">Boyacá Department\u003C\u002Fa>, Colombia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-109641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 2.1 x 1.3 x 0.7 cm\n\u003Cdl>\u003Cdt>Euclase\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>An absolutely flawless, perfect, gem euclase crystal of high quality. It has glassy lustre and is more intensely transparent and bright, in person. This mine sets the standard for euclase and the recent finds here (from about 2004 til recently) have provided many more specimens than in the past it is true - but few of this calibre. This crystal is perfect, and complete, front back and sides. The minor associated specks are pyrite. ex. Marc Weill Collection, from a find in 2005\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",524,{"id":437,"source_url":438,"license_code":313,"credit_html":439,"title":440,"description":434,"author":354,"original_width":441,"original_height":408},53857,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447168","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447168\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-denv08-26c.jpg",387,{"id":443,"source_url":444,"license_code":313,"credit_html":445,"title":446,"description":447,"author":354,"original_width":448,"original_height":449},53858,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10474715","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10474715\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-ed02a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEuclase\" class=\"extiw\" title=\"en:Euclase\">Euclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Lost Hope Mine, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMwami\" class=\"extiw\" title=\"en:Mwami\">Mwami\u003C\u002Fa>, Karoi (Urungwe; Hurungwe) District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMashonaland_West_Province\" class=\"extiw\" title=\"en:Mashonaland West Province\">Mashonaland West\u003C\u002Fa>, Zimbabwe (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-29866.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 4.2 x 3.3 x 1.8 cm\n\u003Cdl>\u003Cdt>Euclase\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Euclase from this important old locality came out mostly in the 1960s, and STILL SETS the standard for coloration in the species. Although Colombia has since produced some more important and larger crystals of higher gem value, that are truly wordclass as well, the euclase from this small and defunct mine is so much more intense in color saturation that they may as well be two separate species as far as comparisons go. This gorgeous specimen has consistent color, superb lustre, and a good aesthetic. Most euclase from this mine is more blocky and compacted, if in clusters at all (though usually only singles survive and are around for sale). The specimen here has not only good aesthetics in the way the major crystals present, but it has good edges or horizons, without the usual butchered contacts at the sides where all too many of these were hacked off their matrix when collected. As far as size, this is also a large cluster, of which I have seen few over the years. It came from the well known collection of Marion Stuart, heiress to the Carnation fortune, when her collection was sold by Wayne Thompson (with help fro mformerly retired dealer Dr. Gary Hansen, who had sold Stuart many of the pieces decades before) in 2001, and has been buried in a collection since that time. It would have been, had I seen it first, one of my first picks for its color and rarity!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1728,1779,{"id":451,"source_url":452,"license_code":313,"credit_html":453,"title":454,"description":447,"author":354,"original_width":455,"original_height":456},53859,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10474717","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10474717\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-ed02c.jpg",1472,1425,{"id":458,"source_url":459,"license_code":313,"credit_html":460,"title":461,"description":447,"author":354,"original_width":462,"original_height":463},53860,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10474719","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10474719\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase-ed02b.jpg",1146,1246,{"id":465,"source_url":466,"license_code":313,"credit_html":467,"title":468,"description":316,"author":291,"original_width":469,"original_height":470},53861,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=15926130","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=15926130\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase 2.jpg",2701,2685,{"id":472,"source_url":473,"license_code":297,"credit_html":474,"title":475,"description":476,"author":477,"original_width":478,"original_height":479},53862,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=65146888","Masahiro miyasaka, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=65146888\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Euclase ユークレース.jpg","OLYMPUS DIGITAL CAMERA","Masahiro miyasaka",6205,2395,[481,486,491,496],{"id":292,"url":482,"label":483,"formula":484,"spacegroup":485,"year":185},"\u002Fcif\u002F4288.cif","Hazen 1986 · Si Al Be O5 H","Si Al Be O5 H","P 1 21\u002Fa 1",{"id":487,"url":488,"label":489,"formula":490,"spacegroup":485,"year":185},4289,"\u002Fcif\u002F4289.cif","Hazen 1986 · Si Al Be O5","Si Al Be O5",{"id":492,"url":493,"label":494,"formula":495,"spacegroup":485,"year":150},4292,"\u002Fcif\u002F4292.cif","Mrose 1962","Al Be Si O5 H",{"id":497,"url":498,"label":499,"formula":500,"spacegroup":501,"year":123},4293,"\u002Fcif\u002F4293.cif","Biscoe 1933","Be Al Si O5","P 1 21\u002Fc 1",[503,504,505,506],"Euclaas","Euclasit","Euclasita","Euclasite",[508,512,516,520,524,527,531,535,539,543,547,551,555,559,563,567,571,575,579,582,585,588,592,595,598,602,605,608,611,615,619,622,625,628,631],{"lang":509,"names":510},"ar",[511],"أوكلاز",{"lang":513,"names":514},"az",[515],"Evklaz",{"lang":517,"names":518},"be",[519],"Эўклаз",{"lang":521,"names":522},"be-tarask",[523],"Эўкляз",{"lang":525,"names":526},"be-x-old",[523],{"lang":528,"names":529},"bg",[530],"Евклаз",{"lang":532,"names":533},"ca",[534],"euclasa",{"lang":536,"names":537},"cs",[538],"euklas",{"lang":540,"names":541},"de",[542],"Euklas",{"lang":544,"names":545},"es",[546,505],"Euclasa",{"lang":548,"names":549},"et",[550],"euklaas",{"lang":552,"names":553},"eu",[554],"Euklasa",{"lang":556,"names":557},"fa",[558],"اوکلاز",{"lang":560,"names":561},"fr",[562],"euclase",{"lang":564,"names":565},"it",[566],"Euclasio",{"lang":568,"names":569},"ja",[570],"ユークレース",{"lang":572,"names":573},"kk",[574],"Эвклаз",{"lang":576,"names":577},"kk-arab",[578],"ەۆكلاز",{"lang":580,"names":581},"kk-cn",[578],{"lang":583,"names":584},"kk-cyrl",[574],{"lang":586,"names":587},"kk-kz",[574],{"lang":589,"names":590},"kk-latn",[591],"Évklaz",{"lang":593,"names":594},"kk-tr",[591],{"lang":596,"names":597},"ky",[574],{"lang":599,"names":600},"lt",[601],"Euklazas",{"lang":603,"names":604},"nb",[538],{"lang":606,"names":607},"nl",[550],{"lang":609,"names":610},"nn",[538],{"lang":612,"names":613},"pl",[614],"Euklaz",{"lang":616,"names":617},"ru",[618,574],"хрупик",{"lang":620,"names":621},"sk",[538],{"lang":623,"names":624},"sv",[542],{"lang":626,"names":627},"uk",[530],{"lang":629,"names":630},"uz",[515],{"lang":632,"names":633},"zh",[634],"蓝柱石","Q424245",{"history":11,"applications":11}]