VENDU Tourmaline Noire Druzy 8 Sculpté producing a sparkling effect

producing a sparkling effect

Chelsea Filter: Nothing

Common pink opal can be confused with:

it is composed largely of yellow calcite

32g Carat weight: 56

VENDU Tourmaline Noire Druzy 8 Sculpté producing a sparkling effectBlack tourmaline druzy cabochon. Black Shape: Drop Size: 42. 81 x 27. 78mm Weight in grams: 18. 30g Carat weight: 91. 50 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.