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Gemological information on blue chalcedony: Density: Between 2
Tadijkistan
Refractive index: 1
25gPoids en carat: 36
VENDU Hypersthène 12 pierre de lune pêche Gemological information on blue chalcedony:Hypersthene cabochon. Color: Grey Shape: Oval Size: 29. 91 x 22. 30mm Weight in grams: 9. 42g Carat weight: 47. 11 carats Country of origin: Canada Gemological information on hypersthene: Possible color: Gray, green, brown, black Density: Between 3. 43 and 3. 90 Hardness: Between 5 and 6 Crystal system: Orthorombic Breakage: Irregular Cleavage: Perfect Polariscope: Anisotropic Refractive index: np: 1. 686 to 1. 755 nm: ? ng: 1. 703 to 1. 772
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