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  1. 3.73 Ct. Natural Multi Color Doublet Opal Australia Free Form Cabochon

    Price:  $66.42

    Product ID: 818726972
    Product Name: Opal
    Price : $66.42
    Weight: 3.73
    Jewelry Size: 19.4 x 8.3 x 2.5 Mm
    Shape: Free Form Cabochon
    Color: Multi-Color
    Clarity: Opaque
    Luster: Good
    Origin: Australia
    Treatment: Unheated / Untreated
    Crystal Structure: Amorphous
    Hardness: 5.5 - 6.5
    Specific Gravity: 2.15
    Refractive Index: 1.42 - 1.43
    Chemical: SiO2·nH2O
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