about pink diamonds
The better known “white diamonds” are graded according to their LACK of colour whilst coloured diamonds are graded for their INTENSITY of colour. Coloured diamonds also tend to contain more inclusions than white diamonds. Finding a coloured diamond that is near to flawless is extremely rare.
Trace elements are usually the source of colour in the majority of diamonds and although it is not known exactly what causes the colour in pink diamonds. It is thought that the dislocation of the crystal lattice is the source of their unique colour.
These distortions cause the diamond to absorb light differently to white diamonds and they also reflect colours differently.
Coloured diamonds are named according to an internationally recognized naming pattern. This was developed by the Gemological Institute of America (GIA). First, the carat size is state, then the intensity of the stone, followed by any secondary hue (also called overtone colours) and then the dominant colour of the stone is mentioned last. For example, a 1.15 carat, Fancy Vivid Purplish Pink Diamond is a Pink diamond (meaning the hue is the dominant colour present in the stone) with a hint of purple colour. The stone weighs 1.15 carats and the intensity grade is called a Fancy Vivid. All coloured diamonds are considered more valuable when there is only a straight single colour and no overtone, other than a purplish pink.
Less than 0.01% of all diamonds mined are quality pink stones, therefore they carry very high prices. However, the predominant reason pink diamonds are pricey is because they are very hard to come by and because of excellent marketing and branding they are in high demand. Like any luxury brand such as Gucci or Versace, the Argyle Pink Diamond from Western Australia are considered some of the best diamonds in the world.
Coloured diamonds are always worth more per carat than colourless diamonds. This means that when a 1.50 carat fancy intense pink diamond is compared to a 1.50 carat colourless stone, the pink diamond is worth considerably more than the white diamond.