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Informations gemmologiques sur la nacre:
variété de microcline
Country of origin: Mali
Poids en carat: 72
Stone: Rock crystal
VENDU Améthyste trapiche en tranche 1 Carré facetté Informations gemmologiques sur la nacre:Slice of trapiche amethyst. Color: Purple Size: 62. 49 x 46. 14mm Weight in grams: 26. 79g Carat weight: 133. 95 carat Country of origin: India Gemological information about amethyst: Possible color: Blue mauve, purple, dark magenta, purple magenta Density: 2. 65 Hardness: 7 Crystal system: Trigonal Fracture: Conchoidal Cleavage: None Polariscope: Anisotropic (restores all 90, except in the optical axis) Refractive index: n0: 1. 538 to 1. 544 ne: 1.
