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85mm de diamètre
98mm Weight in grams: 11
Trade name: Dragon Stone
Bull's eye beads
Color: Deep red
VENDU Tourmaline Noire 1 Carré facetté 85mm de diamètreBlack tourmaline cabochon. Black Shape: Oval Size: 42. 62 x 25. 57mm Weight in grams: 15. 60g Carat weight: 78. 03 carat Country of origin: Madagascar Gemological information about tourmaline: Density: Between 2. 84 and 3. 40 Hardness: Between 7 and 7. 5 Crystal system: Trigonal Fracture: Subconchoidal to irregular Cleavage: None Polariscope: Anisotropic (restores all 90 except in the optical axis) Refractive index: Ne: 1. 603 to 1. 772 No: 1. 619 to
