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  1. Unheated 1.54 Ct. Clean Oval Natural Gem Bi Color Tourmaline

    Price:  $94.64

    Product ID: 807231266
    Product Name: Tourmaline
    Price : $74.64
    Weight: 1.54
    Jewelry Size: 7.8 x 6 x 4.4 Mm
    Shape: Oval
    Color: Bi Color
    Clarity: IF
    Luster: Good
    Origin: Nigeria
    Treatment: Unheated
    Crystal Structure: Trigonal
    Hardness: 7 - 7.5
    Specific Gravity: 3.0+
    Refractive Index: 1.62 - 1.68
    Chemical: Na(Li,Al)3Al6(B03)3 Si6O18(OH)4
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