Perles en tanzanite Ovale pointu it turns pink

it turns pink

75mm Weight in grams: 14

silver (in the sun and pale blue in the shade)

Color: Light green to dark green zoning Shape: Drop Size: 32

Perles en tanzanite Ovale pointu it turns pinkTanzanite beads. Color: Purple Size: 6mm Country of origin: Tanzania Gemological information about tanzanite: Note: It is a variety of zoisite Possible color: Blue, dark blue, blue purple, violet, magenta Hardness: Between 6 and 6. 5 Crystal system: Orthorhombic Breakage: Irregular Cleavage: Perfect Polariscope: Anisotropic, restores every 90 Refractive index: Np: 1. 690 to 1700 Nm: 1. 693 to 1. 698 Ng: 1. 698 to 1. 706 Birefringence: 0. 008 to 0. 013