Diamonds

Diamond valuation: the expertise of Vermot & Associés, auctioneers

Vermot & Associés is a firm specializing in the auction and valuation of jewelry and precious stones. With 10 jewelry auctions organized in 2025, the firm has established itself as one of the leading players in the French and international market.

Appraising a diamond requires rigorous analysis and a thorough understanding of market mechanisms. Whether it is an antique piece of jewelry, a mounted diamond, a stone certified “on paper,” or a sealed diamond, a professional appraisal allows you to determine its true value and confidently consider a sale, insurance, or inheritance.

Vermot & Associés puts its expertise as auctioneers at the service of diamond appraisal, taking into account international gemological standards and market realities in 2026. An appraisal is free and confidential if you do not request official documents.
 

Why have a diamond appraised?

The value of a diamond is based on many technical and qualitative parameters. Weight (carat), clarity, color, and cut commonly referred to as the “4Cs” as well as origin and the presence of a certificate directly influence its price.

An appraisal carried out by a professional in the auction market provides a clear, reliable, and objective view of the stone's value, while avoiding approximations. It is an essential benchmark for making informed decisions, whether for asset management, commercial, or insurance purposes.
 

An appraisal based on precise gemological criteria

Vermot & Associés' diamond appraisals are based on a thorough and methodical analysis. The study takes into account recognized gemological criteria, visual and technical examination of the stone, as well as its setting, if it is part of a piece of jewelry, or the signature of the mount (Cartier, Boucheron, Belperron, Templier, Boivin, etc.).

The international diamond price on the day of the appraisal (Rapaport) and knowledge and analysis of recent auction results are also included in the analysis in order to provide a consistent appraisal in line with market demand in 2026.
 

How can you easily have your diamonds appraised with Vermot & Associés?

Vermot & Associés offers an accessible and structured appraisal process. An initial request can be made via the online appraisal form, attaching the necessary information and images.

Large documents or files (certificates, detailed photographs) can be sent securely via WeTransfer. For personalized support, it is also possible to schedule an online appointment with the firm.
 

Expert, rigorous, and confidential support

Once the analysis is complete, you will receive a detailed appraisal. This can be used as a basis for an auction, insurance declaration, or asset management.

The Vermot & Associés team will also advise you on the best valuation strategies, while respecting confidentiality and the owner's interests.
 

Entrust the valuation of your diamonds to Vermot & Associés

When you call on Vermot & Associés, you benefit from the expertise of a firm renowned for its reliability and in-depth knowledge of the gemstone market. In 2025, more than 4,000 pieces of jewelry were sold by the firm. This means you can realize your assets in a short period of time, as the firm organizes a jewelry and watch sale every month.

To find out the value of your diamond and receive assistance with the process, contact the firm for an appraisal by qualified professionals. You can also subscribe to our newsletter to keep up to date with sales news and catalogs posted online.

In addition to diamond appraisals, Vermot & Associés also appraises many other types of property. To find out more, see the complete list of the firm's specialties and discover all our areas of expertise.