Obsidian Tumblestones (Black)

Pieces of tumbled Black Obsidian, available in two sizes.



Bulk Buys

Buy 5-9 pieces for                 £0.86-£1.76
Buy 10-19 pieces for                 £0.81-£1.66
Buy 20+ pieces for                 £0.76-£1.56

Black Obsidian Tumblestones

Black Obsidian tumblestones, available in two sizes.

Some of these stones will be slightly brown, rather than a deep black. Some pieces may also have a silver sheen in, which is truly beautiful when viewed in light.


These beautiful stones make a great decorative object in a bowl or a small vase. As a glass, they are perfectly suitable for use as fish tank or aquarium gravel. They do not contain any metals or anything that would affect a delicate pH balance.

The pictures you see here are representative of the products and are usually not the exact item you will receive. Where various grades are available we do try to photograph each grade - but some photographs are still on their way!


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What are tumblestones?

Tumblestones are stones that have been put in spinning barrels with an abrasive compound for weeks or months. This slowly rounds off the rough rock and corners – the stones are then cleaned, and placed with a less abrasive grit. This happens several times until the stones are placed into a barrel with a polishing compound for their final polish.