Natural coloured diamonds are very exclusive and rare, even rarer than colourless diamonds. A true natural coloured diamond has been gifted to us by nature and can be found in a variety of shades, from pink to yellow to brown and even red and are they only found in a handful of places.
Only one in every 10,000 diamonds has a natural colour, which is why these diamonds are called fancy coloured diamonds. These stones are purchased almost exclusively for the intensity and distribution of the colour of the diamond. Criteria considered when purchasing a white or colourless diamond, such as cut proportions and clarity, are less important when purchasing a fancy coloured diamond.
Coloured diamonds come about due to various factors. For instance, yellow diamonds owe their cheerful hue to the presence of nitrogen. Blue diamonds owe their colour to the boron they contain. The cause of pink and red diamonds’ remarkable colour is not certain, although speculations state that they are the result of fractures in the crystal lattice. The rarer the colour and the more intensely the colour shows, the higher the value. Yellow and brown diamonds are most commonly found, while red, blue, and green diamonds are among the rarest of all fancy colours.
Colour intensity, namely the deepness or richness of the colour, is the most important parameter when purchasing a coloured diamond. The more intense the colour, the rarer and more valuable the diamond will be. Diamonds with lighter colour intensity levels such as faint, very light, light, fancy light, and fancy are more common than diamonds with richer intensities like fancy intense, fancy vivid, and fancy deep, and thus less valuable.
All fancy coloured diamonds from BNT Diamonds are 100% natural and not treated.
Below you can find some examples of different colours and intensities: