• refractive index testing - sapphire

    Sapphire

    "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

    GemstoneCorundum, Sapphire
    Natural or man madeNatural
    Jewelry typeRing
    Gem StateFaceted
    ColorBlue
    TransparencyTransparent