In order to enhance its creations, Chaumet rigorously and exclusively selects extremely white (colourless) diamonds, with a colour range from D to G.
The less colour a diamond has, the more valuable it is. The international classification established by the GIA has a colour-grading scale which begins at D (perfectly colourless diamond) and continues to Z (diamond of a » tinted white » or » light yellow « ).
Chaumet diamonds do not have any inclusions visible to the naked eye (natural vision without the aid of a magnifying glass). Thus the House only selects diamonds graded in the FL to VS (Very slightly included) categories. These very slight inclusions, when present in the diamond are recorded and mapped on the GIA diamond certificate.
Each stone is unique and characterised by its degree of clarity. A diamond’s clarity is determined by the number, size and position of inclusions (impurities) that it presents. These inclusions are marks left by nature when the diamond was formed. The clarity scale developed by the GIA ranks diamonds from FL (Flawless = no defects) to I3 (Included = inclusions visible to the naked eye).
The Chaumet House only selects its diamonds from the two best cuts: Excellent and Very Good.
A diamond’s cut corresponds to the balance of its proportions and angles. A diamond cut with the greatest precision works like a mirror: it captures the light and reflects it through its facets, delivering the best brilliance and « »fire » » of the stone under the gaze of the person admiring it.
In 1919, the physicist Marcel Tolkowsky published a study on the optical properties of the cut of the brilliant round diamond and the desired optimal proportions. These values are still current and used in the international classification defined by the GIA, presenting a cut scale ranging from Excellent (perfect cut) to Poor (mediocre cut).
Chaumet offers a wide range of diamonds of all weights, set in a great variety of settings.
The universally-recognised unit of measurement for the weight of a diamond is the carat, which is 0.20 g. The weight, combined with the three other « »Cs » » of the GIA classification, determines a diamond’s value. The greater a diamond’s weight, the more valuable and rarer it is.