Opal Stone

    Black opal, 215.85 cts, from Lightning Ridge, Australia, on display at the American Museum of Natural History, New York, NY. Photo by greyloch. Licensed under CC By-SA 2.0.

    Article: Appraising Opals

    Credit: greyloch

    GemstoneOpal Stone
    Natural or man madeNatural
    OriginAustralia
    Origin detailsLightning Ridge
    Carat Weight215.85
    Gem StateRough
    ColorBlack
    TransparencyOpaque
    Photo phenomenaPlay of Color
    Multi-colormore_than_3_colors