• flagstone - opal patterns

    Opal Stone – Natural, Cabochon, Black

    The large but irregular size and shape in this opal's play of color resemble flagstone. Photo by Ra'ike. Licensed under CC By 3.0.

    Article: Identifying Opal Patterns

    Credit: Ra’ike

    GemstoneOpal Stone
    Natural or man madeNatural
    Gem StateCabochon
    Photo phenomenaPlay of Color