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  1. 0.68 Ct. Natural 6 Ray Black Star Oval Cab Sapphire Gemstone

    Price:  $5.99

    Product ID: 806146134
    Product Name: Star Sapphire
    Price : $5.99
    Weight: 0.68
    Jewelry Size: 6.3 x 5.2 x 1.9 Mm
    Shape: Oval Cabochon
    Color: Black
    Clarity: Opaque
    Luster: Good 6 Rays Star
    Origin: Thailand
    Treatment: Heated
    Crystal Structure: Trigonal
    Hardness: 9
    Specific Gravity: 3.9 - 4.1
    Refractive Index: 1.76 - 1.78
    Chemical: Al2O3, Aluminum
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