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effet schiller (reflets argentés)
Pays d'origine: Congo
Indice de réfraction: De 1
550 / nm: 1
A savoir: Variété de spondumène
VENDU Améthyste chevrons 21 OVale effet schiller (reflets argentés)Chevron amethyst cabochon. Color: Purple streaked with white Shape: Oval Size: 45. 04 x 25. 20mm Weight in grams: 12. 99g Carat weight: 64. 99 carat Country of origin: Brazil 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
