• Colorado gemstones - Smoky quartz and feldspar

    Smoky Quartz – Natural, Specimen, Black

    Smoky quartz and feldspar. Photo courtesy Matt Fisher, Colorado Prospector Club.

    Article: A Visitor’s Guide to Colorado Gemstones

    GemstoneQuartz, Smoky Quartz
    Natural or man madeNatural
    OriginUnited States
    Origin detailsColorado
    Gem StateSpecimen
    ColorBlack
    TransparencyOpaque