Indigo Blue Tourmaline 0.42 ct / 2 pcs
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Product Details
Stone type: Tourmaline
Weight: 0.42 ct / 2 pcs
Color: Indigo Blue
Dimension: 3.79 x 3.79 x 2.50 mm, 3.80 x 3.80 x 2.61 mm
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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