Indigo Tourmaline 1.82 cts / 18 pcs
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Product Details
Stone type: Indigo Tourmaline
Weight: 1.82 cts / 18 pcs
Dimension: 3.0 mm
Color: Blue
Shape & Cut: Round, 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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