LONDON (Alliance News) - Gemfields PLC Wednesday saw total revenues of USD33.5 million from its inaugural auction of rough ruby and corundum in Singapore between June 12 and 17.

True North Gems Extends Ruby Island Corundum Host by 4.7km Along Strike3. A total of 606 analytical readings were taken on-site using an XRF (Niton) geochemical analyzer. Results were used to track ...

June 18 (Reuters) - Gemfields Plc : * Inaugural ruby and corundum auction results * Total auction revenues of $33.5 million; * Average realised price of $18.43 per carat; ...

We may exclude from view, for our present purposes, the clear and brightly coloured varieties of corundum, so much prized as gem-stones (ruby, sapphire, &c), and also the composite material known ...

This determined that the most abundant mineral in the axes was corundum, known as ruby in its red form and sapphire in all other colours. Hard case The majority of prehistoric stone objects are ...