This month’s birthstone, sapphire, exists in a myriad of colours but it’s always been most strongly associated with the colour blue. The Ancient Persians in fact believed that the Earth rested on a giant blue sapphire and it was the reflection of this that coloured the sky.

One of the most famous pieces of sapphire jewellery in existence is the 12 carat Ceylon sapphire engagement ring, originally belonging to the late Diana, Princess of Wales, and now the Duchess of Cambridge. Perhaps one of the reasons why sapphire is currently the most popular gemstone for engagement rings.

See sapphire jewellery.