• Sample Gemology Questions - Demantoid

    Andradite

    "Andradite," demantoid variety, Antetezambato, Ambanja District, Diana Region, Antsiranana Province, Madagascar. © Rob Lavinsky, www.iRocks.com. Used with permission.

    Article: IGS Certification Exam: Sample Gemology Questions

    Credit: www.iRocks.com

    GemstoneAndradite, Garnet
    Natural or man madeNatural
    OriginMadagascar
    Origin detailsAntetezambato, Ambanja District, Diana Region, Antsiranana Province
    Gem StateSpecimen
    ColorGreen
    TransparencyTranslucent