Muscovite is a common mineral belonging to the mica group, known for its shiny, layered appearance. It is often found in granite and gneiss rocks, where it forms thin, flexible sheets. These sheets can be easily peeled apart, making muscovite useful in various applications, including electrical insulation and as a filler in products like paints and cosmetics. This mineral gets its name from Moscow, where it was historically mined. Muscovite is typically colorless or light-colored, but it can also appear in shades of green, brown, or even pink. Its unique properties and beauty make it a popular choice among collectors and in the jewelry industry.