The Moonstone is a potasso-sodic feldspar, formed by an ex-solution of orthose in the albite, said " perthite " or "orthoclase", in the lunar reflections (where from its name), phenomenon says adularescence.
Deposits: Sri Lanka as well as Brazil, the United States, India, Madagascar, Myanmar.
Cut in cabochons.
Indian moonstone: present frequently a brilliant aspect, and, but very rarely, of the asterism, on an intense thorough color.
Moonstone has been used in jewelry for centuries, including ancient civilizations. The Romans admired moonstone, as they believed it was born from solidified rays of the moon.
Both the Romans and Greeks associated Moonstone with their lunar deities.