The greater the purity of the diamond, the greater its rarity and value. Nearly all diamonds have structural inconsistencies or small crystals of different types. These are known as inclusions or internal features. The number, colour, size and location of these features determines the purity of every diamond. There are various different international classification systems to assess the internal features of the diamond.
All diamonds are beautiful, irrespective of their colour.
But it is also true that the less colour a diamond has, the greater its rarity and value. Diamonds with more colouring are classified from M to Z and are described as coloured . Diamonds classified beyond Z are known as fancy and are exceptionally rare. Cut Of all the four characteristics, the cutting is the only one directly influenced by human hand. The other three are all dependent on nature.