Indigo Blue Tourmaline 0.74 ct / 2 pcs
EB3105Product Details
Stone type: Tourmaline no heat
Weight: 0.74 ct / 2 pcs
Dimension: 4.30 x 4.30 x 3.39 mm , 3.91 x 3.91 x 2.68 mm
Color: Indigo Blue
Shape & Cut: Octagonal, 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*
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