Green Tourmaline 6.11 cts

Stone type: TourmalineWeight: 6.11 cts Color: GreenDimension:   10.67 x 9.75 x 8.27 mmShape & Cut: Cushion, Yavorskyy cut Treatment: Unheated and Untreated (No Indications Observed)Refractive Index: 1.618-1.643 Hardness: 7-7.5Specific Gravity: 3.1Optical properties: Doubly refractive Chemical formula: Complex Boron Silicate Shipment from: Thailand Return Policy: 3 Day Money-Back Return*