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Optical properties: Doubly refractive
Optical properties: Singly refractive
The combination of shape and cut unveils a symmetrical pattern of facet reflections
this spinel is entirely natural a pristine miracle of nature
Color: Red
Indigo Tourmaline 0.97 ct PINK SAPPHIRE Optical properties: Doubly refractiveStone type: Indigo Tourmaline Weight: 0. 97 ct Color: Blue Dimension: 6. 87 x 5. 91 x 3. 06 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*
