Mahogany Obsidian

Mahogany Obsidian is a natural volcanic glass, formed when lava solidifies so quickly that mineral crystals do not have time to grow. The name Obsidian simply refers to glassy texture, and technically obsidian can have any chemical composition. Red or brown streaks in the normally jet-black obsidian are due to the inclusion of hematite or other iron-based minerals. This stone can be found worldwide, though the main source is Mexico.