Peridot

Where it forms, where it's found

45recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 4 15.999 63.996
45.49%
12MgMagnesium Magnesium 2 24.305 48.610
34.55%
14SiSilicon Silicon 1 28.085 28.085
19.96%
Total 140.691 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From Mindat formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
8OOxygen	Oxygen	4	15.999	63.996	45.49%
12MgMagnesium	Magnesium	2	24.305	48.610	34.55%
14SiSilicon	Silicon	1	28.085	28.085	19.96%
	Total	140.691	100.00%

Synonyms

Bastard Emerald
Evening Emerald
Night Emerald
Peridootti
Péridot
Peridoto
Perydot

Literature, links & citation

Citations

1672Rosnel, Pierre de (1672) Le Mercure Indien, ou le Tresor des Indes [The Indian Mercury, or the Treasure of the Indies].
1965Farrell, E. F., Newnham, R. E. (1965) Crystal-field spectra of chrysoberyl, alexandrite, peridot and sinhalite. American Mineralogist, 50 (11-12) 1972-1981
1976Cooper, S. B. Nikon (1976) Peridot — The Green Stone. The Journal of Gemmology, 15 (1) 24-26 doi:10.15506/jog.1976.15.1.24DOI: 10.15506/jog.1976.15.1.24
1981Koivula, John I. (1981) San Carlos Peridot. Gems & Gemology, 17 (4) 205-214 doi:10.5741/gems.17.4.205DOI: 10.5741/gems.17.4.205
1985Fischer, Karl (1985) Peridot - Olivin in Edelsteinqualität [Peridot - Gemstone quality olivine]. Lapis, 10 (9) 31-40

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Peridot — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/peridot-7710},
  note      = {Accessed 2026-05-11}
}