Indigo Tourmaline 1.09 cts / 2 pcs

Stone type: Indigo Tourmaline
Weight: 1.09 cts / 2 pcs
Color: Indigo Blue
Dimension: 5.18 x 3.67 x 3.27 mm, 5.10 x 3.60 x 3.41 mm
Shape & Cut: Cushion, 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*