Hypnotic Gems Materials: 1/2 lb Bulk Rough Black Obsidian Stones from Mexico - Raw Natural Crystals for Cabbing, Cutting, Lapidary, Tumbling, Polishing, Wire Wrapping, Wicca and Reiki Crystal Healing Size: Most stones are 1 inch to 2 inches Each and every specimen is unique and you will receive stones similar to the image shown! Stones in our images have been soaked in water to showcase their potential! Includes only authentic Hypnotic Gems certified stones - Mined from specific veins exclusively for Hypnotic Gems to ensure quality! **IMPORTANT - These is rough natural earth mined obsidian (volcano glass) which are exactly as it came out of the ground. Some pieces may be sharp and we urge you to use caution when handling this material.