VENDU Tourmaline Noire 7 Goutte facettée The chips shape is the

The chips shape is the result of small fragments of blue lace agate that are then polished so as not to have any loss

Please note: Part of the quartz family

Informations gemmologiques sur le jaspe Noreena:

brun à brun rougeâtre

it is a mixture between the two

VENDU Tourmaline Noire 7 Goutte facettée The chips shape is theBlack tourmaline cabochon. Black Shape: Drop Size: 39. 69 x 33. 29mm Weight in grams: 20. 27g Carat weight: 101. 35 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