Green Tourmaline 0.42 ct

Stone type: Tourmaline no heat
Weight: 0.42 ct
Dimension: 4.97 x 4.97 x 3.37 mm
Color: Green
Shape & Cut: Round, Yavorskyy cut

Treatment: Unheated and Untreated (No Indications Observed)
Refractive Index: 1.618-1.643
Hardness: 7-7.5
Specific Gravity: 3.1
Optical properties: Doubly refractive
Chemical formula: Complex Boron Silicate
Shipment from: Thailand
Return Policy: 3 Day Money-Back Return*