• refractive index testing - sapphire

    Sapphire – Natural, Faceted, Blue

    "Mom's New Sapphire Ring," photo by Katrina Br*?#*!@nd. Licensed under CC By-SA 2.0.

    Article: Refractometer Guide, Part 1: Refractive Index Testing

    Credit: Katrina Br*?#*!@nd

    GemstoneSapphire, Corundum
    Natural or man madeNatural
    Jewelry typeRing
    Gem StateFaceted
    ColorBlue
    TransparencyTransparent