Obsidian

Obsidian is natural volcanic glass, born where lava cooled too fast for crystals to form, and it shows: a deep glassy black lustre, smooth conchoidal curves, and sometimes a silvery sheen or the grey starbursts of snowflake obsidian. That dark mirror-like surface makes it a striking contrast stone in any collection. Each piece here is one-of-a-kind — no two share the same sheen or form — and the exact piece pictured is the one you receive. If you're looking to buy obsidian online in Australia, start here — and see our obsidian guide on the Discover page to learn more.