Perles en tourmaline rubellite entre 6 et 10mm TRD Sizes:6mm Flower agate cabochon

Flower agate cabochon

30 carat Country of origin: Brazil Gemological information on sodalite: Possible colors: Blue

Sizes between 4 and 8-9mm

41 carat Country of origin: Peru Gemological information about pink common opal: Note: There are two types of opal: noble (also called precious) and common

Sizes between 2

Perles en tourmaline rubellite entre 6 et 10mm TRD Sizes:6mm Flower agate cabochonRubellite tourmaline beads. Color: Pink and white Sizes between 6 and 10mm 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 1. 778 Birefringence: 0. 013 to 0. 033 Chelsea