• precious opal nodule - opal prospecting and mining

    Opal Stone – Natural, Specimen, Blue

    While the miner who found this nodule hit the jackpot, it's entirely possible that there was no other precious opal nearby. Photo by James St. John. Licensed under CC By 2.0.

    Article: Opal Prospecting and Mining

    Credit: James St. John

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