3 lbs of rough snowflake obsidian. Size range is 1 to 2 inches for each piece. These all natural stones can be used for rock tumbling, wire wrapping, lapidary, cabbing, decoration, fountain stones, decorative potting rocks, jewelry making, metaphysical, knapping or rock collecting. Snowflake obsidian is an extrusive igneous rock that forms when volcanic lava cools very quickly. The white "snowflakes" are thought to have formed when small amounts of water in the lava form bubbles and metamorphasize into cristobalite, a form of quartz. Anciently obsidian was used for cutting tools, arrowheads and polished for mirrors. Obsidian is natures natural glass! These beautiful specimines are from Utah, USA.