• gilson opal - synthetic opal

    Opal Stone – Lab-made, Other, Black

    The bright, saturated colors and columns visible in the bottom right corner indicate synthetic opal. © Opal Auctions. Used with permission.

    Article: Synthetic Opal Types

    Credit: Opal Auctions

    GemstoneOpal Stone
    Natural or man madeLab-made
    Gem StateOther
    Photo phenomenaPlay of Color