Obsidian is a found across the globe from Mexico to New Zealand and Iceland to Argentina. It has a Mohs hardness factor of 5-5.5 and is a member of the Igneous rock family. Obsidian is a volcanic glass that is formed as lava from volcanoes rapidly cools. Most obsidian is relatively young as the glass gradually crystallises into minerals over time. It was a highly valued material for weapons as far back as 7000 years ago because of the easily worked, sharpness of its composition. As well as weapons it had another ingenious use. It was polished to a high sheen to be used as mirrors before the invention of glass. Supports: Strength, Transformation, Protection, Abundance, Stress relief, Grounding, Focus, Remove blockages