Tank Diamond Ring 0.45 Carats 18 Carat Yellow Gold Platinum

0 €
Expertise and authentication
Secure delivery
Digital certificate
Payment in 3 installments free of charge (up to €4,000) - Free return within 14 days
Retro tank ring in yellow gold set with old cut diamonds. In a perfect state. Ring dimensions: 8.53 x 21 x 4.71 mm (0.336 x 0.826 x 0.185 inches) Approximate total weight of diamonds: 0.45 carats Weight of the ring: 10.40 g Finger size: 54 (US: 7) 18 carat yellow gold, 750/1000th and platinum (owl hallmark) France, circa 1940/50 Excellent condition ! Although we pay attention to the quality of our antique jewelry, they have a story. Consequently, some gems may be slightly grayed and the metal delicately patinated. Everything you need to know about the tank ring!
  • Dimensions (jewel) :8.53 x 21 x 4.71 mm
  • Total weight (jewel) :10.4 g
  • Hallmark : Owl
  • Total weight (diamonds) :0.45 carat
  • Reference : 9162160537927
Delivery & Returns

The Buyer has the choice between several delivery methods:

  • Home delivery by courier only for Orders delivered within Paris.
  • Home delivery by La Poste Colissimo and DHL for Orders delivered worldwide, in order to provide you with the best service.

All packages are insured at declared value.

When your order is shipped, you will receive an email indicating your Colissimo or DHL tracking number. Using this number, you will be able to track your order directly by connecting to the website of our carriers, La Poste Colissimo or DHL, with whom we have made specific agreements concerning the nature of the items and deadline commitments.

You can return your order within 14 days after receipt of the package, provided that the product has not been worn and that the jewelry has its original packaging (label, plastic and pouch).

For any return request, please contact our customer service: contact@castafiore.fr

Have a question? Contact us directly.

Contact us at +33(0)608130158 or fill in the fields below.

Authentication & Certification

Charlotte Rey and Anne Borde help individuals who ask themselves a thousand questions when selling their jewelry(s). How much is it worth on the market? Is it solid gold or gold plated? How to identify stones? And, after all, what if it came from a prestigious house?

With the jewel in hand, the founders of Castafiore determine the nature of the materials, the weight of the gold, the carats of the stones, etc. They are also looking for the trace of a hallmark, a sign of a possible renowned jeweler.

This expertise then gives rise to a digital certificate of authenticity registered in the Blockchain (GoodsID), in other words traceable and unfalsifiable; it will accompany the jewel throughout its existence, over the course of its owners.



Anne Borde worked for 30 years in the world of auctioneers and auctions, notably in Drouot. She has inventoried countless collections and estates; she had thousands of objects in her hands which she examined from every angle. His sharp eye misses no nugget.

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