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Why is the Cobalt Blue Spinel so desirable and hunted for by Gem Connoisseurs
and bold elegance
Dimension: 15
Origin: Africa
Indigo Blue Tourmaline 1.09 cts PURPLE Why is the Cobalt BlueStone type: Tourmaline Weight: 1. 09 cts Color: Indigo Dimension: 6. 11 x 5. 25 x 4. 08 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*
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