Buying a second-hand diamond means buying a laboratory report as much as a jewel. The stone does not wear, does not tarnish and keeps its characteristics: it is the setting that ages. At equal quality, the pre-owned market therefore gives access to larger stones. Every piece shown is appraised in Saint-Tropez, and important stones come with their certificate.
| Criterion | Scale | What it governs |
|---|---|---|
| Carat | Weight in metric carats | Mass, not apparent diameter |
| Colour | D to Z | From colourless to tinted |
| Clarity | FL to I3 | Inclusions visible or not under a loupe |
| Cut | Excellent to Poor | Fire, brilliance, light return |
This is the most misunderstood point on the market. A poorly proportioned 1.20 carat diamond lets light escape through the pavilion and looks lifeless, while a 1.00 carat stone with an excellent cut radiates. Before comparing two stones on their weight, compare their proportions, their symmetry and their polish: these are what decide what the eye sees.
An analysis report issued by an independent gemmological laboratory, which records the measured characteristics of the stone. It does not set a price but provides the objective basis for any valuation.
No, it follows other criteria. Antique cuts, cushion, rose or old European, have a different, softer fire, much sought after for period settings.
Yes, with or without their setting. An appraisal in the boutique allows us to measure the stone and make a firm offer.
