Natural coloured diamonds exemplify nature's distinct elegance. The most emphasised feature of coloured diamonds is their rarity. When purchasing a magnificent piece of jewellery, the prioritised features for a coloured diamond are in reverse order compared to colourless diamonds. Colour is the main attribute distinguishing how rare and valuable a coloured diamond is. The most recognised rare colours are saturated pink, blue and green, while the rarest coloured diamonds are red, green and blue with medium to dark tones and moderate saturation. Furthermore, a very slight colour difference can have a significant impact on its value.

The rarest type of coloured diamonds are red, green and blue with medium to dark tones in combination with moderate saturation.


The brilliance of colour, depth, and intensity is the most critical factor in purchasing a coloured diamond. The intensity of the colour also increases the value of coloured diamonds.

Setting and Cut

The value of a coloured diamond can be increased by selecting the right setting and cut for the stone. The higher the quality of the cut, the better the colour will be reflected when exposed to light sources. A coloured diamond jewellery setting should be thoroughly evaluated and chosen by an expert. The main component is colour harmony; for example, a yellow diamond will appear better with yellow gold and rose gold with a red diamond.

Shape and Clarity

The characteristic shape and clarity are not equally important as colour and cut but also play an important role. Shapes of coloured diamonds usually come in unique designs to emphasise the colour.