Among the 4Cs, the most determining factor is without a doubt the cut of the diamond – its symmetry, its balance – neither too high, nor too flat. It is the guarantee of exceptional beauty. Central brilliant-cut Cartier diamonds whose size is greater than 0.30 carats on the GIA scale are classified "Very Good" or "Excellent"*, guaranteeing them an optimal brilliance and a unique sparkle.
Several additional criteria imposed by our "Cartier Diamond Experts" for brilliant-cut diamonds:
* For brilliant-cut centre diamonds under 0.30 ct, as well as for fancy-cut centre diamonds, the Cut grade accepted by Cartier is between "Good" and "Excellent".
The unit of measurement of diamond weight is the carat; its name comes from the carob seed that was once used to weigh diamonds. The weight is the most important criteria in determining the price of a diamond. A carat corresponds to 0.20 g.
Cartier offers diamond solitaires in a large range of carats according to the setting*.
* Diamond solitaires certified from 0.18 carats
Inclusions are natural imperfections in a diamond that can alter its quality.
The clarity of a diamond depends on the number of inclusions, their size and their position.
The clarity chart put into place by the GIA allows classification from FL (Flawless = no visible flaws even under a magnifying glass X10) to I3 (Imperfect, inclusions visible to the naked eye).
Cartier diamonds are only selected between IF and VS2, which guarantees exceptional clarity and the absence of any inclusion visible to the naked eye.*
* The diamonds presented in this catalogue and the guarantees relative to the "4 Cs" apply to round diamonds of over 0.18 carats.
A diamond is all the more exceptional if it is white. The colour is evaluated by the GIA according to a scale that goes from D to Z in alphabetical order (D signifies a "colourless" diamond and Z "near-colourless"). Cartier diamonds are exclusively chosen between D and H, meaning they are all colourless. Cartier accepts only diamonds with little or no fluorescence.