Dumortierite Tumblestones


Tumbled Dumortierite pieces, available in a few sizes.


Dumortierite Tumblestones

Nice quality Dumortierite tumblestones, available in a few sizes.

These are a nice banded blue colour, which is reasonably pale compared to some Dumortierite.

These stones would make a nice decorative stone gravel for a fishtank or an aquarium, and look great in a vase, flowerpot, etc. Because of their colour, they contrast nicely against black stones and other shades of blue, too.

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!


For more information about Dumortierite, and a full list of all our related products, please see our main ‘Dumortierite’ page. We offer a range of sizes of tumblestones, and sometimes rough and polished pieces, or mineral specimens.


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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.