Difference between revisions of "Peridot"
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== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | olivine; zeberdjet; evening emerald; olivine, péridot (Fr.); peridoto (Esp., Port.); Peridot (Deut.); peridoot (Ned.) | + | olivine; forsterite; zeberdjet; evening emerald; olivine, péridot (Fr.); peridoto (Esp., Port.); Peridot (Deut.); peridoot (Ned.) |
| − | + | [[[SliderGallery rightalign|Fayalite, Upper Bear Creek CO.PNG~FTIR (MFA)|forsteriteRS.jpg~Raman (RASMIN)]]] | |
== Physical and Chemical Properties == | == Physical and Chemical Properties == | ||
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== Resources and Citations == | == Resources and Citations == | ||
| − | + | * Gem Identification Lab Manual, Gemological Institute of America, 2016. | |
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 561 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 561 | ||
| − | + | * Wikipedia: [https://en.wikipedia.org/wiki/Peridot Peridot] (Accessed Dec 2022) | |
* Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982 | * Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982 | ||
| − | |||
* R.F.Symmes, T.T.Harding, Paul Taylor, ''Rocks, Fossils and Gems'', DK Publishing, Inc., New York City, 1997 | * R.F.Symmes, T.T.Harding, Paul Taylor, ''Rocks, Fossils and Gems'', DK Publishing, Inc., New York City, 1997 | ||
| − | |||
* Website: http://www.geo.utexas.edu/courses/347k/redesign/gem_notes/Peridot/peridot_triple_page.htm | * Website: http://www.geo.utexas.edu/courses/347k/redesign/gem_notes/Peridot/peridot_triple_page.htm | ||
| − | |||
* Yasukazu Suwa, ''Gemstones: Quality and Value, Volume 1'', Sekai Bunka Publishing Inc., Tokyo, 1999 | * Yasukazu Suwa, ''Gemstones: Quality and Value, Volume 1'', Sekai Bunka Publishing Inc., Tokyo, 1999 | ||
| − | |||
* Michael O'Donoghue and Louise Joyner, ''Identification of Gemstones'', Butterworth-Heinemann, Oxford, 2003 | * Michael O'Donoghue and Louise Joyner, ''Identification of Gemstones'', Butterworth-Heinemann, Oxford, 2003 | ||
Revision as of 10:22, 21 December 2022
Description
A transparent, yellow-green Gemstone. Peridot is a transparent form of Olivine that was known in ancient Greece and in Egypt. Many of the green stones worn by Cleopatra were peridot. The main old world source for peridot was the island of Zabargad (St. John's Island) in the Red Sea. Peridot was called an evening emerald because it appears to lose its yellowish cast at night. It has sometimes been misidentified as emerald and as green glass. Former names include topaz (Greek) and zerberdjet (Persian). Peridots are still obtained from Zabargad and also from Brazil (Minas Gerais), South Africa, Kenya, China, Myanmar (formerly Burma, near Mogok), Norway (Sondmore), and the U.S. (Arizona, Hawaii).
Synonyms and Related Terms
olivine; forsterite; zeberdjet; evening emerald; olivine, péridot (Fr.); peridoto (Esp., Port.); Peridot (Deut.); peridoot (Ned.)
Physical and Chemical Properties
- Orthorhombic crystal system.
- Fracture = conchoidal to uneven.
- Luster = vitreous.
- Streak = colorless.
- Fluorescence = none
| Composition | (Mg,Fe)2SiO4 |
|---|---|
| Mohs Hardness | 6.5 |
| Density | 3.22-3.40 g/ml |
| Refractive Index | 1.650-1.690 |
Comparisons
Properties of Common Gemstones
Resources and Citations
- Gem Identification Lab Manual, Gemological Institute of America, 2016.
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 561
- Wikipedia: Peridot (Accessed Dec 2022)
- Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
- R.F.Symmes, T.T.Harding, Paul Taylor, Rocks, Fossils and Gems, DK Publishing, Inc., New York City, 1997
- Website: http://www.geo.utexas.edu/courses/347k/redesign/gem_notes/Peridot/peridot_triple_page.htm
- Yasukazu Suwa, Gemstones: Quality and Value, Volume 1, Sekai Bunka Publishing Inc., Tokyo, 1999
- Michael O'Donoghue and Louise Joyner, Identification of Gemstones, Butterworth-Heinemann, Oxford, 2003