Chrome tourmaline gets its intense green color from chromium. Grading faceted dark colored gemstones can present some challenges. A simple calculation can help you estimate a fair value for these beautiful stones. "Chrome Tourmaline with Quartz" © Rob Lavinsky, Used with permission.

    Article: Advice For Grading Dark Colored Gemstones

    Credit: Rob Lavinsky,

    GemstoneChrome-Tourmaline, Tourmaline
    Natural or man madeNatural
    Gem StateSpecimen