Natural Black Obsidian Spheres | Polished Volcanic Glass Crystal Spheres

Obsidian Spheres These sleek, 39.2 mm black obsidian spheres are carved from natural volcanic glass sourced from Mexico. Obsidian forms when lava cools rapidly with minimal crystal growth, creating a smooth, glass-like texture. It’s technically an igneous mineraloid—non-crystalline but rich in silica—with a bold, jet-black appearance and sharp luster. Each sphere is polished to a smooth finish and weighs approximately 3 oz. Stand not included.