• Citrine pebbles - gemstone scratch testing

    Citrine – Natural, Tumbled, Yellow

    Citrines, like these shown here, and topazes are sometimes misidentified. If you have a piece of rough yellow stone that's scratched by an 8 but not by a 7, you've eliminated topaz (hardness 8) as a possibility. Stones of the same hardness won't scratch each other. As yellow quartz, citrines have a hardness of 7. Photo by Mauro Cateb. Licensed under CC By 2.0.

    Article: Destructive Gemstone Tests: Scratch Testing

    Credit: Mauro Cateb

    GemstoneQuartz, Citrine
    Natural or man madeNatural
    Gem StateTumbled