Black obsidian is a type of volcanic glass that is formed when lava cools quickly and solidifies without sufficient time for crystal growth. As the lava rapidly cools, it forms a black, shiny, and smooth rock with a glassy texture.

Black obsidian is believed to have various metaphysical properties. It is thought to be a powerful protective stone that can absorb negative energy and promote spiritual grounding. Black obsidian is also said to help with emotional healing by releasing past traumas and negative patterns. It is believed to stimulate personal growth and increase self-awareness, allowing individuals to understand their true selves and connect with their inner wisdom.