Spinel

The source of the name Spinel is obscure, but it probably originated from the Latin ‘spina,’ meaning a thorn. Another possible derivation is from the Greek word meaning a spark, alluding perhaps to its fiery colour. Red Spinel was often known as the Balas Ruby, a name derived from Balakshan (in northern Afghanistan), from where the earliest stones were said to have come.

The mineral Spinel produces a lovely range of gemstones which, next to their opulent cousin the ruby, are perhaps the most beautiful of all red gems. Spinel varies in colour from the lightest pink to the deepest ‘garnet’ red, though a beautiful ‘flame’ orange can also be found. The other important Spinel colour is blue, ranging from a magnificent cobalt blue to a more subdued blue-green. Violet and purple colours are also common.

Many natural Spinels contain minute crystals which may be other Spinel-type minerals. Zircon haloes can be found, especially in stones from Sri Lanka. Spinels are found in alluvial deposits, together with Corundum, in Sri Lanka and Myanmar, as well as Afghanistan, Brazil, Australia, USA and Nigeria.

The historic Black Prince’s Ruby, which is set in the front of the Imperial State Crown, is an uncut red Spinel, as is the Timur Ruby, another historical stone in the possession of the British royal family. This latter stone is unique in that engraved on it are the names and dates of six owners, from Shah Jahangir (1612) to Shah Durr i-Dauran (1754).

• Spinel Jewellery is traditionally given to mark a 22nd Wedding Anniversary

View Spinel Jewellery at Astley Clarke