Hydrothermal Emerald Grade "C" Square Cushion 7 mm
3 years ago
56
Laboratory created (True, Cultured) Hydrothermal Emerald, grown by Hydrothermal method which is extremely close to natural process of the best quality Emerald appearance in hydrothermal veins. Color is the same as the best Urals Emerald. Stones Grade C have a lot of imperfections.
Stones were cut from the historical Hydrothermal Emerald grown by original technology in the Institute of Geology and Geophysics of Siberian Science Academy.
Chemical composition (Be3Al2(SiO3)6 with trace amount of Cr
R.I. = 1.56 – 1.60
Specific gravity: 2.76
Mohs Hardness 7.5 - 8
Crystal system: Hexagonal; fragile as all beryls
Only 3 stones in stock
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