• Common Sense Gemstone Grading - Color

    Agate

    "Blue" by Holly Williams is licensed under CC By 2.0

    Article: Common Sense Gemstone Grading: An Alternative System

    Credit: Holly Williams

    GemstoneAgate, Chalcedony, Quartz
    TreatmentsDyeing
    Natural or man madeNatural
    Gem StateOther
    ColorBlue
    TransparencyTranslucent