Sanidine is a potassium-rich feldspar which is related to amazonite (microcline) and orthoclase by its chemistry. Sanidine gems that display adularescence, a mystical internal glow, are called moonstone. Colorless to yellow and pale brown gems have been found in Germany, Mexico, and Madagascar.
- Optical Properties
- Characteristic Physical Properties
- Chemistry & Crystallography
LWUV: Inert to weak red-orange
Countries of Origin