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


Formula Peridot: (Mg,Fe)2SiO4
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
Mineral Class: silicates
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")

Peridot

Size: 1.18 x 1.9 x 1.16 cm
Weight: 23.48 ct
Origin: Mogok / Myanmar

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Peridot Mineral

Origin: Kaghan / North-West Frontier Prov. / Pakistan

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Olivine Mineral
Peridot

Weight: 43.27 ct

Origin: Mogok / Myanmar

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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

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Peridot Pendant
Peridot Mineral

Origin: Naran-Kagan Tal / Kohistan / Pakistan

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Olivine Mineral
Peridot

Weight: 1.64 ct

Origin: St. John's Island / Egypt

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Peridot

Weight: 2.05 ct

Origin: St. John's Island / Egypt

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Peridot

Weight: 0.85 ct

Origin: Arizona / USA

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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

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Peridot Pendant
Peridot

Size: 0.87 x 0.70 cm
Weight: 1.90 ct
Origin: Myanmar

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Peridot

Weight: 3.24 ct

Origin: Pakistan

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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

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Peridot Star


Formula Forsterite: Mg2(SiO4)
Forsteriet, Forsterita, Forsterite, Форстерит, 苦土橄欖石, 橄欖石
Mineral class: silicates
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)
Forsterite Mineral Micromount

Origin: Ettringer Bellerberg Mt. / Ettringen / Eifel Mts. / Rhineland-Palatinate

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Forsterite Mineral
Forsterite

Weight: 1.60 ct

Origin: Dattaw Mine / Mogok / Myanmar

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Forsterite

Size: 0.98 cm
Weight: 6.27 ct
Origin: Kuh-i-Lal / Tajikistan

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Forsterite Mineral Micromount

Origin: Emmelsberg / Eifel Mountains / Germany

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Forsterite
Forsterite

Weight: 3.54 ct

Origin: Dattaw Mine / Mogok / Myanmar

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Forsterite Mineral

Origin: St. Johns Island (Zebirget) / Egypt

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Forsterite Mineral


Formula Dunilite: (Mg,Fe,Mn)2SiO4
Duniliet, Dunilit
Mineral class: silicates
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
Dunilite Mineral

Size: 1.20 x 1.31 x 0.28 cm

Origin: Katukubura Mt. / Kolonne / Embilipitiya / Sri Lanka

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Dunilite Mineral
Dunilite

Weight: 0.17 ct
Size: 0.37 x 0.3 cm
Origin: Katukubura Mt. / Kolonne / Embilipitiya / Sri Lanka

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Formula Pallasite: (Mg,Fe)2SiO4
Pallasiet, Pallasit, Pallasyty, Палласит, 石鐵隕石
Mineral class: silicates
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)
Pallasite 0.07 ct

Weight: 0.07 ct
Size: 0.27 x 0.26 x 0.17 cm
Origin: Lyon County / Kansas / USA

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Pallasite faceted
Pallasite 0.07 ct Report

Report: GIT - The Gem and Jewelry Institute of Thailand
Date 27 February 2015

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Pallasite Report
Pallasite 1.35 ct

Weight: 1.35 ct
Size: 0.78 x 0.59 x 0.4 cm
Origin: Lyon County / Kansas / USA

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Pallasite faceted
Pallasite 1.35 ct Report

Report: GIA - Gemological Institute of America
Date 12 June 2013

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Pallasite Report

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