Snowflake Obsidian Crystal Ball- Whirlwinds are Vortexes of counter-rotating fields of energy. Some of us collect many, but everyone should have at least one! These Snowflake Obsidian Spheres have radially clustered crystals of cristobalite that produce a Snowflake Obsidian pattern. This sphere has a diameter of two inches or 50mm. As with all natural stone, colors vary. Each is unique! Click here to Contact Us Product Number AKSB50