Peridot
(Peridot, Forsterite and Dunilite are varieties of the mineral Olivine)
Commonly known
rarer (so called collectors stones)
very rare (rarities)
relatively rare organic material
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Formula Peridot: (Mg,Fe)2SiO4
Mineral Class: silicates
Peridoot, Peridootti, Péridot, Peridoto, Perydot, Перидот, ペリドート, פרידוט Oliviin, Oliviini, Olivijn, Olivin, Olivín, Olivina, Olivină, Olivinas, Olivino, Oliwiny, Оливин, ओलीवाइन, カンラン石, অলিভিন, 감람석 Crystal System: orthorhombic Mohs Scale: 6.5 - 7 Density (g/cm3): 3.27 - 3.37 Refractive index: 1.650 - 1.703 Colors: golden-green, yellow-brown - black Luster: vitreous Cleavage: different Transparency: transparent - translucent Refractive Index: 1.635 - 1.772 (biaxial +) Fluorescence: - Pleochroism: very slight: colorless - light green Largest Peridot: 319 ct (Myanmar) Deposits: Egypt, Ethiopia, China, France, Canada, Myanmar, Norway, Pakistan, Spain, USA Name: Olivine: from its olive-green color; peridot: possibly from the Greek word "peridona" ("to give plenty resp. richness") |
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Peridot
Size: 1.18 x 1.9 x 1.16 cm Weight: 23.48 ct Origin: Mogok / Myanmar Photo by kind permission of © www.wildfishgems.com |
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Peridot Mineral
Origin: Kaghan / North-West Frontier Prov. / Pakistan Photo by kind permission of © www.exceptionalminerals.com |
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Peridot Pendant with Tanzanite
Weight: Peridot: 8.03 ct; Tanzanite: 1.65 ct Diamonds: total 0.31 ct Gold: 18K White Gold Photo by kind permission of © www.collectorfinejewelry.com |
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Peridot Mineral
Origin: Naran-Kagan Tal / Kohistan / Pakistan Photo by kind permission of © www.irocks.com |
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Peridot
Weight: 1.64 ct Origin: St. John's Island / Egypt Photo by kind permission of © www.irocks.com |
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Peridot
Weight: 2.05 ct Origin: St. John's Island / Egypt Photo by kind permission of © www.irocks.com |
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Peridot Pendant
Weight of the stone: >90 ct Origin of the stone: St. Johns Mine / Yavapai County / Arizona / USA Material: Gold (18K), 30 brilliant diamonds Photo by kind permission of © www.wolfpiontek.de |
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Peridot
Size: 0.87 x 0.70 cm Weight: 1.90 ct Origin: Myanmar Photo by kind permission of © www.thegemtrader.com |
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Peridot Star
Size: 1.45 x 1.27 x 1.18 cm Weight: 4.41 ct Origin: Pyaung Gaung Mine / Bernardmyo / Mogok / Myanmar Photo by kind permission of © www.crystal-treasure.com |
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Formula Forsterite: Mg2(SiO4)
Mineral class: silicates
Forsteriet, Forsterita, Forsterite, Форстерит, 苦土橄欖石, 橄欖石 Crystal system: orthorhombic Mohs scale: 7 Density (g/cm3): 3.271 Cleavage: imperfect Colors: white, grey, light yellow, green Luster: vitreous Cleavage: imperfect Transparency: transparent - translucent Refractive Index: 1.635 - 1.670 (biaxial +) Fluorescence: - Pleochroism: - Largest Forsterite: 17 cm Deposits: Egypt, Finland, Germany, Italy, Myanmar, Norway, Pakistan, Russia, Tanzania, USA 1st Description: 1892 Name: to honor the German naturalist (and companion of James Cook) Johann Reinhold Forster (1729 - 1798) |
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Forsterite Mineral Micromount
Origin: Ettringer Bellerberg Mt. / Ettringen / Eifel Mts. / Rhineland-Palatinate Photo by kind permission of © Stephan Wolfsried Willi Schüller Collection. |
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Forsterite
Weight: 1.60 ct Origin: Dattaw Mine / Mogok / Myanmar Photo by kind permission of © www.gemfrance.com |
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Forsterite
Size: 0.98 cm Weight: 6.27 ct Origin: Kuh-i-Lal / Tajikistan Photo by kind permission of © www.americanthai.com |
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Forsterite Mineral Micromount
Origin: Emmelsberg / Eifel Mountains / Germany Photo by kind permission of © Stephan Wolfsried Willi Schüller Collection. |
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Forsterite
Weight: 3.54 ct Origin: Dattaw Mine / Mogok / Myanmar Photo by kind permission of © www.gemfrance.com |
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Forsterite Mineral
Origin: St. Johns Island (Zebirget) / Egypt Photo by kind permission of © www.mineralman.com |
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Formula Dunilite:
(Mg,Fe,Mn)2SiO4
Mineral class: silicates
Duniliet, Dunilit Crystal system: orthorhombic Mohs scale: 6.5 - 7.0 Density (g/cm3): 3.48 Colors: golden green Luster: vitreous Transparency: transparent - translucent Refractive Index: 1.677 - 1.718 (biaxial -) Cleavage: distinct - good Fluorescence: - Pleochroism: strong: brownish yellow - greenish yellow Largest crystal: ? cm Deposits: Katukubura Mt. / Kolonne / Embilipitiya / Sri Lanka Discovery: 1996 1st Description: 1996 (Gunasekera ?) Name: to honor the discoverer Dunil Palitha Gunasekera from Ratnapura / Sri Lanka |
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Dunilite Mineral
Size: 1.20 x 1.31 x 0.28 cm Origin: Katukubura Mt. / Kolonne / Embilipitiya / Sri Lanka Photo by kind permission of © www.crystal-treasure.com |
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Dunilite
Weight: 0.17 ct Size: 0.37 x 0.3 cm Origin: Katukubura Mt. / Kolonne / Embilipitiya / Sri Lanka Photo by kind permission of © www.kox-gems.com |
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Dunilite
Largest known cut Dunilite Weight: 552.60 ct Size: 65.1 x 47.3 x 23.0 mm Origin: Kolonne / Embilipitiya / Sri Lanka Photo by kind permission of © www.cvs.fi |
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Formula Pallasite:
(Mg,Fe)2SiO4
Mineral class: silicates
Pallasiet, Pallasit, Pallasyty, Палласит, 石鐵隕石 Crystal system: orthorhombic Mohs scale: 6.5 - 7.0 Density (g/cm3): 3.27 - 3.37 Colors: golden-green Luster: vitreous Transparency: transparent - translucent Refractive Index: 1.635 - 1.772 (biaxial +) Cleavage: different Fluorescence: - Pleochroism: very slight: colorless - light green Origin: In meteorites (Pallasites). Olivine crystals in a nickel-iron matrix. Discovery: In the Krasnojarsk meteorite, found in 1749 in Siberia. 1st Description: 1794 (E.F. Chladni) Name: to honor the discoverer Peter S. Pallas (Germany) |
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Pallasite Mineral
Size: 0.60 x 0.47 x 0.44 cm Weight: 0.81 ct Origin: Admire / Lyon County / Kansas / USA Photo by kind permission of © www.cvs.fi |
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Pallasite 0.07 ct
Weight: 0.07 ct Size: 0.27 x 0.26 x 0.17 cm Origin: Lyon County / Kansas / USA Photo by kind permission of © www.cvs.fi |
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Pallasite 0.07 ct Report
Report: GIT - The Gem and Jewelry Institute of Thailand Date 27 February 2015 Photo by kind permission of © www.cvs.fi |
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Pallasite 1.35 ct
Weight: 1.35 ct Size: 0.78 x 0.59 x 0.4 cm Origin: Lyon County / Kansas / USA Photo by kind permission of © www.cvs.fi |
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Pallasite 1.35 ct Report
Report: GIA - Gemological Institute of America Date 12 June 2013 Photo by kind permission of © www.cvs.fi |
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