The Maison selects diamonds that are used to set its creations according to the universal certification established by the GIA (Gemological Institute of America) and based around 4 criteria known as the 4Cs: « Colour », « Clarity », « Cut » and « Carat weight ».
The GIA evaluation uses a colour scale ranging from D (perfectly white diamond) to Z (slightly yellow-tinted diamond).
Maison Chaumet only selects perfectly white, colourless diamonds between D and G for its creations.
The GIA’s clarity scale classifies diamonds from FL (« Flawless – a diamond without a single flaw ») to I3 (« Included’ – diamonds with inclusions that are visible to the naked eye). Only diamonds from categories FL to VS (« Very slightly included – diamonds with only very slight inclusions ») are selected for the Maison’s creations. Chaumet diamonds do not have any inclusions that are visible to the naked eye.
Each stone is unique and characterised by its degree of clarity, which is determined by the number, size and position of the inclusions. These imperfections are marks left by nature during the diamond’s formation. The inclusions are recorded and mapped on the GIA diamond certificate.
The cut of a diamond finds the balance between proportions and angles in order to achieve optimum brilliance. A very precise cut allows the stone to catch the light and reflect it through its facets, reflecting the brilliance and sparkle back to the eye of the beholder.
The quality of the cut is determined using a scale ranging from « Excellent » to « Poor ». Chaumet only selects diamonds of a high quality, either « Excellent » or « Very Good » diamonds.
Chaumet offers a wide range of cuts in its collections: round brilliant, pear, Taille Impératrice, cushion, oval and emerald, all of which are designed to enhance the stone.
A carat is a unit of measurement for the weight of a diamond. 1 carat is the equivalent of 0.20 grams, or 5 carats to 1 gram. Combined with the other three « Cs », the weight determines the value of a diamond. The heavier the weight, the more valuable and rarer it is.
The Maison offers diamonds of all sizes and weights in a wide range of settings.