Physical Formation
Obsidian is a natural volcanic glass formed when lava cools extremely rapidly, preventing crystals from developing. Because it forms so quickly, Obsidian has a smooth, glassy texture rather than the crystalline structure found in most minerals. It has been used by humans for thousands of years to create tools, weapons, and decorative objects.

Color: Black, occasionally with silver or gold sheen
Mohs Hardness: 5 – 5.5
Common Sources: Mexico, United States, Iceland, Japan, and Armenia
Zodiac Signs Associated With: Scorpio, Sagittarius
Chakras Associated With: Root Chakra

Metaphysical Associations
Obsidian is often associated with grounding, protection, truth, and self-reflection. Crystal practitioners frequently use it as a stone for clearing negativity and encouraging honest self-examination. It is believed to help strengthen emotional resilience while promoting a sense of stability during challenging situations.

Varieties of Obsidian
Obsidian occurs in several beautiful varieties created by tiny inclusions and the way light interacts with the volcanic glass. Black Obsidian is the most common form and is known for its deep, glossy appearance. Golden Sheen Obsidian displays flashes of gold caused by gas bubbles trapped during formation, while Silver Sheen Obsidian exhibits a silvery glow created in a similar manner. Rainbow Obsidian reveals bands of iridescent colors—often green, purple, gold, or blue—when viewed under bright light due to microscopic inclusions within the glass. Other varieties include Snowflake Obsidian, which contains white crystal patterns of the mineral cristobalite, and Mahogany Obsidian, which features reddish-brown patches created by iron-rich inclusions.

Fun Fact
Ancient civilizations prized Obsidian for its razor-sharp edges. Even today, some specialized surgical scalpels are made from Obsidian because its edge can be significantly sharper than traditional steel blades.