• synthetic rubies and sapphires

    Corundum – Lab-made, Faceted, Red

    Synthetic corundum gems, all 8 x 10 mm. Photo © Joel E. Arem, PhD, FGA. Used with permission.

    Article: What is the Best Synthetic Corundum?

    Credit: Joel E

    GemstoneCorundum
    Natural or man madeLab-made
    Height10
    Width8
    Gem StateFaceted
    ColorRed, Yellow, Pink
    TransparencyTransparent