Crystal Agate &reg;Black Obsidian Prism Style 6-sided Natural Single Terminated Point Wand 2 Inch Long-1pc Black Obsidian Prism Style 6-sided Natural Single Terminated Point Wand 2 Inch Long-1pc Black Obsidian Rock Crystal Massage Wand Suitable for office, collecting, gifts, study, jewelry, massage, healing About 2" ,Single Terminated points, large Black Obsidian ; Obsidian is natural volcanic glass