Mica is a naturally occurring mineral that, when ground into a fine powder, exhibits a unique luster that reflects light beautifully. Shimmer mica powder comes straight from these mica minerals, typically sourced from the earth's crust. The shimmering effect is primarily due to the layered structure of mica particles, which create a play of light reminiscent of the finest pearls and gemstones. It comes in a variety of colors and finishes, from subtle pastels to bold metallics, making it suitable for a wide variety of applications.