Ring old opal diamonds in gold

Size guide
Expertise and authentication
Secure delivery
Digital certificate
Payment in 3 installments free of charge (up to €4,000) - Free return within 14 days
Ring antique opal diamonds in yellow gold 18 karats (750 thousandths) and paltinium. Ring centered on a large oval cabochon-cut harlequin opal. The opal is surrounded by 25 diamonds rose-cut opals in a diamond-set paltinium. The shoulders of the Ring are decorated with stylized leaves in paltinium. Opal is translucent and has a beautiful play of blue, green, yellow and orange colors. Ring antique, circa 1920, France.  Eagle head hallmark (French State hallmark for 18 karat gold). Size Size: 55 EU or 7.25 US (sizing possible) Dimensions: 23 x 14 mm  Estimated opal weight: 3.8 carats Condition: scratches from use, small dent in the gold underneath  Weight : 4.39 gr Gemology and beliefs :There are several types of opal: noble opals and common opals. Noble opals, like this one, have a play of color due to light. They are composed of tiny, aligned siliceous spheres of the same diameter. As the light falls on the stone, and depending on the angle from which it is viewed, a play of light dances across the opal's surface. Common opal, on the other hand, has no play of light; its spherules are disordered and of different diameters. Light will only give it a milky appearance. In the collective imagination, opal is said to have the ability to make people invisible. Hence its designation as "Patronus furum" (patron saint of thieves) in the late Middle Ages.
Delivery and 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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