• Contraluz opal, front illumination - opal gems

    Opal Stone

    A contraluz opal from Mexico, illuminated from front (approximately 4 cts). Photo © Joel E. Arem, PhD, FGA. Used with permission.

    Article: Opal Stones and Gems: Value, Price, and Jewelry Information

    Credit: Joel E

    GemstoneOpal Stone
    Natural or man madeNatural
    OriginMexico
    Carat Weight4
    Gem StateFaceted
    ColorColorless
    TransparencyTransparent
    Photo phenomenaPlay of Color