Rubies and sapphires are amongst the world’s most precious gemstones. Their fiery reds and radiant blues are unmistakable. Less well known are the facts that both these stones are members of the corundum family, and that this family has much more to offer than just red and blue.
The corundum family, in fact, has everything you could want in a valuable gemstone: gorgeous colours, great brilliance, and an excellent hardness of 9 on the Mohs scale, putting it right behind the diamond – our hardest natural mineral – and that means it has excellent wearing properties. Its refraction is unusually high too, as evidenced by the wonderful brilliance of perfectly cut specimens. Experienced cutters know that the colour looks markedly more intense when the stone is viewed from one angle than it does when viewed from another.