VENDU Aigue-Marine 13 Chips - Black tourmaline

- Black tourmaline

Blue Stone: turns pink or brown

Colour: Green with medium pronounced perthitic structure

37mm Weight in grams: 13

Number of beads on a 6mm row: 56 beads

VENDU Aigue-Marine 13 Chips - Black tourmalineAquamarine cabochon. Color: Blue Shape: Drop Size: 43. 28 x 31. 44mm Weight in grams: 17. 26g Carat weight: 86. 30 carat Country of origin: Brazil Gemological information about aquamarine: Possible colors: Light blue to dark blue. Blue green Density: Between 2. 68 and 2. 80 Hardness: 7. 5 Crystal system: Hexagonal Fracture: Conchoidal Cleavage: Imperfect Polariscope: Anisotropic (restores all 90, except in the optical axis) Refractive index: No: 1.