Corundum Specimens / Rough (Black)

Small rough pieces of Black Corundum, measuring 10-20MM approximately.

These are lab grown, intended as an abrasive.

£0.95

In stock

Bulk Buys


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

Rough Black Corundum

Small rough pieces of Black Corundum, a form of Aluminium Oxide famous for forming Rubies and Sapphires. These are lab grown, intended as an abrasive.

These pieces measure 10-20MM approximately and make a decent study specimen; they can also be used for gravel due to their low price and nice contrast with white stones like Quartz.

As quite a hard stone, these pieces may be suitable for rock tumbling. It is a good idea to try the lower priced black Corundum before tumbling even low grade Ruby or Sapphire, which are more expensive by far.

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!

You can get in touch via our contact page with any questions. 🙂

For a quick response try our email address, [email protected] – we try to respond within 24 hours.