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2.40 Carats Extremely Rare Clinohumite Gemstone
- UGS
- Dimensions (mm)
- 9.000 x 6.000 x 5.000mm
- Poids (cts)
- 2.400
- Treatment
- No Treatment
- Couleurs
-
Clinohumite is an uncommon member of the humite group, a magnesium silicate according to the chemical formula (Mg, Fe)9(SiO4)4(F,OH)2. The formula can be thought of as four olivine (Mg2SiO4), plus one brucite (Mg(OH)2). Indeed, the mineral is essentially a hydrated olivine and occurs in altered ultramafic rocks and carbonatites. Most commonly found as tiny indistinct grains, large euhedral clinohumite crystals are sought by collectors and occasionally fashioned into bright, yellow-orange gemstones. Only two sources of gem-quality material are known: the Pamir Mountains of Tajikistan, and the Taymyr region of northern Siberia. It is one of two humite group minerals that have been cut into gems, the other being the much more common chondrodite
Cut : Curved Trillion
- UGS
- Dimensions (mm)
- 9.000 x 6.000 x 5.000 mm
- Poids (cts)
- 2.400
- Treatment
- No Treatment
- Couleurs
-
Clinohumite is an uncommon member of the humite group, a magnesium silicate according to the chemical formula (Mg, Fe)9(SiO4)4(F,OH)2. The formula can be thought of as four olivine (Mg2SiO4), plus one brucite (Mg(OH)2). Indeed, the mineral is essentially a hydrated olivine and occurs in altered ultramafic rocks and carbonatites. Most commonly found as tiny indistinct grains, large euhedral clinohumite crystals are sought by collectors and occasionally fashioned into bright, yellow-orange gemstones. Only two sources of gem-quality material are known: the Pamir Mountains of Tajikistan, and the Taymyr region of northern Siberia. It is one of two humite group minerals that have been cut into gems, the other being the much more common chondrodite
Cut : Curved Trillion
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Positifgood seller
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Neutre
Stone is fine related to its price. A misunderstanding concerning the certificate.
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Positif
Nice cut on a lovely stone, thank you very much.
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Positif
Good seller, recomended seller
