Buy / Sell

Are you a seller?

The entire COSMAO team is at your disposal to answer any questions you may have about selling your jewelry.
Simply send us an email at estimation@cosmaoencheres.com with a few photos of your jewelry, then make an appointment directly on the website. We will welcome you to our Paris office in the 9th arrondissement, a stone's throw from Drouot, to explain the auction process step by step.
You will leave the appointment with an estimate of your jewelry and the guarantee of selling it at the best price.

Are you a buyer?

The entire COSMAO team is at your disposal upon request at contact@cosmaoencheres.com to answer all your questions about purchasing your next favorite items at our auctions.

Each jewelry description indicates

• the nature of the stones,

• whether or not a certificate is included,

• the hallmarks present on the jewelry,

• the weight,

• the dimensions

• the presence of any weaknesses or defects.

• As a bonus, suggestions for possible alterations according to your wishes.

Did you win the auction?

COSMAO vous propose de mettre son réseau d’artisans qualifiés à disposition pour toute réparation ou mise à taille.
Vous pouvez venir récupérer directement vos bijoux achetés à notre bureau parisien du 9e arrondissement, à deux pas de Drouot, sur rendez-vous, ou bien privilégier l’expédition et le transport de vos biens par nos partenaires pour un envoi en toute sécurité.