Piaget chooses diamonds which combine the very best of the four criteria – the 4C – defined by the GIA (Gemological Institute of America) in order to obtain an optimum result in terms of quality, aesthetics and finish:
- Colour: the rarest diamonds, pure white, graded between D and F
- Clarity: the clearest diamonds, classified between IF (Internally Flawless) and VVS (Very Very Small Inclusions)
- Cut: diamonds which brilliantly reflect the light thanks to the exceptional quality of their cut
- Carat: a wide range of diamonds including different carat weights, classified from 0.2 carats to over 3 carats.
Piaget adds to these criteria the notion of ethics with regard to the origin of the diamonds selected.
Colour: the brilliance of the most perfect diamond
The most valuable diamonds are pure white. To assess them, a scale evaluates the colour of each stone from D (white) to Z (yellow).
Piaget selects only the rarest diamonds graded between D and F for centre stones and G for pavés.
Clarity: the search for absolute transparency
The most spectacular diamonds are clear; no cloudy or crystal inclusions must affect their clarity.
Each diamond is examined by Piaget gemmologists using tools which provide 10x magnification of the stone, in accordance with best practice.
Piaget only chooses diamonds classified at the top of the clarity scale, between IF (Internally Flawless), with no blemishes visible even under 10x magnification and VVS (Very Very Small Inclusions), with minute inclusions invisible to the naked eye.
F.L – I.F: Flawless or Internally Flawless – no blemishes visible under magnification
V.V.S.1 – V.V.S.2: Very Very Small inclusions
V.S.1 – V.S.2: Very Small inclusions
S.I.1 – S.I.2: Small inclusions
I.1 – I.2 – I.3: Imperfect
Cut/the brilliant reflection of light
The cut is the only criterion affected by human hand and is of primordial importance. A perfectly cut stone magnifies the light which is reflected from one facet to another, giving the diamond an unparalleled brilliance.
Thanks to their expertise, Piaget gemmologists select stones whose cut quality reveals the full beauty of the diamond.
Piaget's criteria for ideal proportions:
Carat/the measure of a perfect diamond
One carat is equal to 0.2 grams, or the weight of a carob seed (the fruit of the African carob tree and once used as a unit of weight in gold trading).
The higher the carat, the more precious the stone, provided of course that the best of the other three criteria are considered; this is the process used by Piaget.
Conflict free and Responsible Jewellery Council (RJC) or ethical rules
Piaget is a member of the Kimberley Process Certification Scheme (KPCS). This international project certifies and monitors all rough diamond transactions to ensure that diamond sales do not finance armed conflicts or criminal enterprises.
Piaget ethics and environment
www.kimberleyprocess.com - www.responsiblejewellery.com