Jasper is a type of opaque, mineral-rich gemstone that comes in various colors and patterns. It is primarily composed of silicon dioxide and is a variety of chalcedony, which is a form of quartz. Jasper is often used in jewelry and decorative items due to its unique appearance and durability. This stone has been valued since ancient times for its beauty and believed healing properties. Different types of jasper, such as red jasper and picture jasper, are named for their distinct colors and patterns. It is commonly found in locations around the world, including the United States, Brazil, and Australia.