• Kaolinite after pseudoleucite after leucite - Brazil

    Leucite – Natural, Rough, White

    If exposed to the air and other elements, leucite can pseudomorph (change chemistry without changing shape) into pseudoleucite, a combination of orthoclase feldspar and nepheline. Further exposure can transform it into the clay mineral kaolinite, like these specimens from Brazil. Photo by Eurico Zimbres. Licensed under CC By-SA 2.5.

    Article: Leucite Value, Price, and Jewelry Information

    Credit: Eurico Zimbres

    GemstoneLeucite
    Natural or man madeNatural
    OriginBrazil
    Gem StateRough
    ColorWhite
    TransparencyOpaque