Colour is life and joy. Nature gives us proof of it every day and amazes us with its thousand combinations.
Even the diamond, from a rough and mysterious stone that comes from the bowels of the earth, emerges shining and brilliant to paint our dream with the colours we love the most.
Precious coloured diamonds are a fantastic and very rare phenomenon.
These "imperfect" gems take their colour from the land in which they were extracted, and carry within them the history of the whole planet.
The diamond in its pure form, would be a crystal of only carbon atoms, without structural imperfections or defects at the atomic lattice level and without inclusions.
The reality is, fortunately, different because no diamond is perfect and its "imperfections", at times, come out as splendid colours.
Red, green, purple and orange are generally the rarest colours, followed by pink and blue; yellows and browns are more common.
Only one diamond out of 10,000 is coloured, and it is this rarity that determines its great value.
The GIA (Gemological Institute of America) has developed a system for classifying the colour of fancy diamonds. This system is based on the following parameters.
> Hue. The actual colour; if the various shades are included, the total colours are 27.
> Saturation. The intensity of the colour.
> Tone. The amount of light present in the colour (brightness / darkness).