Leucite
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
| Gemstone | Leucite |
| Natural or man made | Natural |
| Origin | Brazil |
| Gem State | Rough |
| Color | White |
| Transparency | Opaque |