Redemption of your diamonds and jewels
Maison Diamantaires-OG specializes in the purchase of precious stones, antique jewelry, second-hand jewelry and signed jewelry. Our team of experts gemologists, state graduates, welcomes you to achieve in perfect discretion the expertise, estimation and redemption of your stones. 

Our seriousness and our know-how are important quality guarantees for us and for our customers.
Request an online evaluation.
Diamantaires OG is 30 years of expertise at your service, our offices are located rue Beaubourg in Paris.
Specialists in the valuation and redemption of diamonds and precious stones, the expert gemologists of Diamantaires OG are at your disposal to discuss the authenticity of your most prestigious properties.
Sell ​​your property
Offer of redemption
Without delay
Once the expertise is complete, we establish with you a market value of your stone or your jewel.

Buy / Redeem Jewelry in the heart of Paris

OG Diamonds is a state-certified gemology specialist team for the valuation and purchase of your diamonds, rubies and sapphires and other precious stones.

  • The sale of second-hand jewelry, antique jewelry, modern jewelry, signed jewelry.
  • White diamonds and colored diamonds.
  • Sale of rubies and sapphires, emeralds or other precious stones.
  • The sale of old and modern watches of great brand.
  • In some cases the sale of gold.

With 30 years of experience as expert gemologists located in the heart of Paris, we make sure to welcome you in our Parisian offices to advise you and share our passion for jewelry and gemology by offering you free appraisals and estimates at the best market prices.

Estimate and offer to buy your diamonds quickly:

We study at the request of the owners all forms of diamonds: the round diamond, the princess diamond, the emerald, the diamond pear or the oval and radiant diamond, the diamond of asscher shape, the diamonds cut cushion, or of heart and also the marquise diamond.

The estimate at Diamantaires OG is perfectly free, without commitment and in all confidentiality. 

Do you have questions about our redemption service?

Do you have questions about our jewelry buying services? Looking for information that you can not find on our site? You want to make an appointment for an expertise or an estimate of your jewelry? 
For any questions we invite you to exchange with our expert gemologists by phone at 01 48 87 81 44 or via our Contact form.
You can also write to us by e-mail about our antique jewelry repurchase service on the e-mail address [email protected]

35 years of experience in the diamond market.

For 35 years, we put our experience to your advantage to offer you a service of redemption of precious stones in the best conditions.

Boutique de bijoux à Paris

43 rue Beaubourg

A team of expert gemologists, state graduates, welcome you from Monday to Friday, from 10h to 13h and from 14h to 19h. 

expertise gratuite diamants, pierres précieuses


Our seriousness and our know-how are important quality guarantees for us and for our future customers. 

Expertise achat bijoux Paris , évaluation valeur d'un bijou


Trust our professionalism and entrust us with your most valuable possessions. 

rachat de Bijoux d'occasion et ancien sur Paris

Second hand & old jewelry

At Diamantaires OG, we buy both contemporary and vintage second-hand jewelry. In all confidentiality we will advise you and estimate the value of your used jewelry. 

Learn more

Gemmologists Experts

Expertise is in essence our main vocation.

situated 43 rue Beaubourg in the 3rd arrondissement of Paris, Diamond-OG is a prestigious diamond sign. Our slogan "Expertise is in essence our main vocation" underlines our attitude of respect for the customer and for his product by the look and the listening of our diamond expert gemologists. The confidentiality and the respect of the rules of the diamond tradition are also an integral part of our essence. 

Our video

Video presentation of the company Obagem
Vie Privée diamantaire

Respect for privacy

All your jewelry expertise requests are entirely anonymous. We never reveal any personal information about you.

Rachat de bijoux et peirres précieuses en toute sécurité

This site is 100% secure

Our website Diamantaire-Paris is encrypted (SSL) to ensure your security throughout your navigation on our site.

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