While pink diamonds are eternally popular, there is a growing interest in other natural coloured diamonds such as yellow, blue and the champagne and cognac hues. Whether these are used as accent stones to highlight a main diamond, or as the centre stone of an engagement ring, really depends on the personal taste and price point. With the imminent closure of the Australian Argyle mine which produces almost all of the world’s pink diamonds, it is apparent that couples are increasingly wanting to have rings featuring Argyle diamonds – pink, white, blue or other – to create something unique but also because of the “time capsule” nature and Australian origin of these gems.