• dust on a glass turtle - a world of crystals

    Glass – Lab-made, Carved, Colorless

    Since dust contains particles of quartz, it can scratch the surfaces of many household materials and objects, like this glass turtle. Anything lower than a 7 on the Mohs scale of hardness is vulnerable. Photo by Avenue 51. Public domain.

    Article: A World of Crystals

    Credit: Avenue 51

    GemstoneArtisanal Glass
    Natural or man madeLab-made
    Gem StateCarved