Sardonyx is a type of gemstone that is made up of a mixture of chalcedony (a type of quartz) and corundum (a mineral that includes rubies and sapphires). It is known for its distinctive banding, which typically consists of white or light-colored layers of chalcedony alternating with dark red or brown layers of corundum. Sardonyx is found in a variety of locations around the world, including the United States, Brazil, India, and Madagascar.
Sardonyx is often used in jewelry and decorative objects, and it is prized for its unique appearance and durability. It is often cut into cabochons or beads for use in jewelry, and it is also sometimes tumbled to create a smooth, polished finish. Sardonyx is considered a semi-precious stone, and it is rated at a 7 on the Mohs scale of mineral hardness, making it quite durable.
Sardonyx is believed to have various properties and associations in crystal healing practices. It is said to promote strength, courage, and self-control, and it is also believed to have the ability to bring good luck and success. Sardonyx is also sometimes used in Feng Shui, a traditional Chinese practice that involves arranging objects in a specific way to create a harmonious energy flow in a space.