Tourmaline 0.40 ct / 5 pcs
181599Product Details
Stone type: Tourmaline
Weight: 0.40 ct / 5 pcs
Dimension: 3.06 x 3.06 x 2.22 mm, 2.60 x 2.60 x 1.90 mm
2.61 x 2.61 x 1.84 mm, 2.54 x 2.54 x 1.75 mm
2.43 x 2.43 x 1.70 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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