Beautiful Snowflake Obsidian! Unusual black volcanic glass with tiny clusters of white "snowflakes." Technically, the naturally formed black glass (in sphere cut) contains clustered crystals of cristobalite that produce the pattern--but you'll just appreciate how wonderful they look! 50mm (2 inches). As with all natural stone, colors vary. Each is unique! Information on how to place your order by fax or by telephone. Product Number AKSB50