These 8mm round beaded snowflake obsidian bracelets are on an elastic cord to stretch to fit most wrist sizes. Snowflake obsidian is known as the purity stone, it's serene energy helps remove negativity and is said to balance the mind, body, and soul. Also helps one to recognize & change unhealthy patterns, it is also a volcanic glass. Remember to cleanse all types of obsidians very often. It helps us to realize that life is a learning curve, and sometimes we have to make mistakes in order to learn from them.