• Iolite, Blue and Yellow Directions - gemstone pleochroism

    Iolite

    "Iolite, Both Yellow and Blue directions" by David Abercrombie. Licensed under CC By-SA 2.0.

    Article: What is Gemstone Pleochroism?

    GemstoneCordieriteIolite,
    Natural or man madeNatural
    Gem StateRough
    ColorBlue
    TransparencyTranslucent