Mica - Also known as Star Mica, Golden Muscovite, or Star Crystal. When yellow muscovite forms layers of stars the result is this extraordinary formation. Muscovite is a stone that instills self-confidence and problem solving.
Approx 8cm by 7cm. Photo and size are a guide.
Disclosure: If you're worried about your health always see your doctor first. There are no guarantees with crystals, but they may enhance your life.