Antique jewelry object group engagement ring (or anniversary ring) Condition very good condition Country of origin unknown Style Vintage See also: vintage jewelry Period ca. 1940 Material platinum (touchstone tested) Diamonds 16 old mine brilliant cut diamonds with an estimated weight of ± 0.50ct colour and clarity H/J, si/i All diamond weights, color grades and clarity are approximate since stones are not removed from their mounts to preserve the integrity of the setting. All diamonds we offer are screened by the I.J.G.C. for whether they are natural or synthetic, and all diamonds in this jewel are 100% guaranteed to be natural. Precious stones One cabochon opal with an estimated weight of ± 2.50ct All color stone weights are approximate since stones are not removed from their mounts to preserve the integrity of the setting. It is a very common practice to treat gemstones to intensify their clarity or colour. The item in question has not been tested in this regard. Birthstones Diamond is the birthstone (or month stone) for April and opal for October. Hallmarks Illegible remains. Dimensions top of ring 1,62 cm (0,64 inch) x 1,42 cm (0,56 inch) Weight 4,20 gram (2,70 dwt) Ring size Continental EU: 57 & 18¼ , Size USA: 8 , Size UK: P½ Adin Reference Nº 21019-0035 - Accompanied by a professional report of authenticity for your peace of mind. - Shipped insured and registered for your security, though you're most welcome to collect in person. - For shipments outside the EU, import duties and other charges may apply. We advise checking this in advance. - We invite you to browse through our customer feedback to discover the level of satisfaction we consistently provide. - See more of our products, visit: https://auction.catawiki.com/lotsfrom/Adin - Antique and vintage jewellery often undergoes thoughtful refurbishment, remodelling, or repairs to enhance its longevity and wearability. Such pieces frequently bear marks of this tender care. Furthermore, we present our antique and vintage jewellery in its authentic state, refraining from removing scratches or applying rhodium plating to white gold items. Our priority is to preserve the genuine allure and history of each piece. However, as the new owner, you have the option to take it to a local goldsmith for a cosmetic refresh, should you choose.