Obsidian is a natural volcanic glass formed by rapid cooling of high-silica lava. It is typically black but can also appear gray, brown, mahogany, green or even nearly colorless, and may display special effects such as sheen (silver or gold), rainbow iridescence, or concentric 'eye' patterns (e.g., rainbow or apache tears). With Mohs hardness about 5–5.5 and conchoidal fracture, it is brittle and can chip or break if struck.
Price History
Value Drivers
Carat weight has modest influence on value because obsidian occurs in large masses and is easy to carve. Larger cabochons and carvings that display strong optical effects—such as bold sheen or eye patterns—are more desirable, but price per carat remains relatively low compared with crystalline gemstones.
Color and optical phenomena are primary value drivers. The most prized material includes rainbow obsidian with multicolored iridescence, gold or silver sheen obsidian with strong directional sheen, and well-defined 'eye' patterns. Plain black obsidian is abundant and inexpensive, though still popular for jewelry and carvings.
As a glassy material, obsidian is typically uniform, but may contain gas bubbles, flow bands or crystallites. For jewelry, pieces with clean, even color or well-formed patterns and minimal internal cracks are preferred. Obvious fractures and large inclusions that disrupt appearance lower value and durability.
Obsidian is cut into cabochons, beads, cameos and carvings. Cut quality focuses on shape, symmetry and a smooth, high polish that highlights sheen or color zoning. Because of brittleness and conchoidal fracture, careful handling and edge protection in settings are important.
Market Dynamics
Obsidian forms at many volcanic centers worldwide, with notable sources in Mexico, the United States, Armenia and other regions. It is geologically abundant and easily quarried for decorative use, so there is no significant scarcity at commercial quality levels.
Demand is driven by fashion jewelry, carvings, metaphysical markets and decorative objects. Special varieties such as rainbow and gold sheen obsidian enjoy stronger demand among collectors and artisans than plain black material.
Recent Trends: steady demand from the broader jewelry market, with gradual growth in online and designer channels for well-cut, natural stones.
News
No news coverage yet
Insights
Obsidian has been used since prehistoric times for cutting tools and weapons because it can be knapped to produce extremely sharp edges.
In jewelry, obsidian is sometimes misidentified or marketed under trade names like 'Apache Tears' or 'Snowflake Obsidian' for specific inclusion patterns.
Because obsidian is glass, it can be damaged by strong impacts or hard abrasion; protective settings are advisable for rings and bracelets.
Snowflake obsidian contains radial spherulites of cristobalite that give it a distinctive black-and-white spotted appearance.
Some black glass imitations are sold as obsidian; density, UV response and visual features can help distinguish natural material.
Modern artists use obsidian in sculptures and architectural accents to add deep, reflective black surfaces.
Have a Obsidian?
AI identification, grading, origin detection & market valuation