Diamonds! Diamond is the official birthstone of April. Diamonds are found in a variety of colours, but majority of those mined are colourless. When a Diamond possesses colour, it is referred to as a Fancy Colour Diamond. Fancy Colour Diamonds are incredibly unique and hold and immense amount of value as a result of their rarity. In fact, one in every 10,000 Diamonds mined are classified as Fancy Colour Diamonds.