Snowflake Obsidian is a type of Obsidian that gets its white marks from inclusions of Cristobalite.   It can help balance, ground mind, body, and aura. It also activates root and third eye chakras and many enhance your psychic abilities.
 
Coloring and Size may vary from photo. 
Each stone is unique
Sizing range  1 1/4" to  1 1/2"