Favoured by jewellers for centuries, the sapphire was once believed to exude heavenly rays, and today it remains one of the most prestigious stones in the gem world. Lucky September babies get to call this jewel their birthstone. The range of hues that the sapphire exhibits covers virtually every colour of the rainbow, each of which originates from a different corner of the globe. The best-known variety is, of course, the famous cornflower-blue sapphire.
This valuable gemstone comes from the mineral corundum. Although blue is the most popular colour, sapphires may also be pink, yellow, purple and colourless. Many sapphires have been heat treated to bring out their blue hue. Sapphires have excellent hardness and their durability rating is 9 on the Mohs scale.