Sheet mica is a naturally occurring silicate mineral with perfect basal cleavage. That means it splits parallel to the base of the crystal, leaving flat, thin sheets. It is chemically inert, lightweight, flexible, doesn’t absorb water, insulates, and more.
The word “mica” comes from the Latin. It meant “crumb.” The earliest known use of mica was in the paleolithic period (40,000 BCE to 100,000 BCE). It was used in Africa, Egypt, Greece, and China.
Today, mica is used to embellish paintings, cloth, buildings, and pottery. Powdered mica is used to add glitter and shine to all kinds of traditional and contemporary artwork. Sheet mica can be used in a kiln. Now, artists are using it to make book covers and journal pages.