Indigo Blue Tourmaline 0.77 ct website

Indigo Blue Tourmaline 0.77 ct

190033

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Product Details

Stone type: Indigo Tourmaline 
Weight: 0.77 ct
Color: Blue
Dimension: 6.47 x 4.07 x 3.45 mm
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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