Type of jewel: Vintage geometric diamond dress ring. Condition: Good condition, with minor surface marks consistent with this ring's age and use. Style: Mid-century modern, with an architectural geometric composition. Era: Circa 1950. Material: 18K warm yellow gold, touchstone tested, with 18K white gold or platinum appliques. Diamonds: One brilliant-cut diamond, estimated weight 0.50 ct; six brilliant-cut diamonds, estimated combined weight 0.54 ct. Total diamond count: 7 pcs. Total diamond weight: Approx. 1.04 ct; average colour E–G and clarity VVS–VS. Diamond weights, colour and clarity are approximate, as the stones were assessed in their settings and were not removed for grading or weighing. All diamonds in this ring were individually tested with the EXA Natural Diamond Detector by Magilabs and identified as natural diamonds. Traditional gemstone associations: Diamond is the traditional birthstone for April and is associated with enduring love and strength. Dimensions: Ring head: 1.33 × 1.80 cm. - See picture with a ruler in cm and inches Weight: 7.7 grams. Ring size: EU 52 (US 6; UK M; inner diameter approx. 16.5 mm). Ring sizes are professionally measured and rounded to the nearest millimetre; slight variations are standard and do not affect wear. Adin reference Nº: 26229-00088 - All jewels are delivered in an Adin jewellery box. Boxes shown in photos are display props unless stated otherwise. - Every piece is accompanied by an Adin certificate of authenticity for your peace of mind. Adin has specialised in antique and vintage jewellery in Antwerp for over four decades. We maintain professional memberships and affiliations that reflect our ongoing commitment to standards, research, and responsible trade practice. - Shipped insured and registered. Collection in person is also welcome. - 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 pieces: https://auction.catawiki.com/lotsfrom/Adin - Antique and vintage jewellery may show evidence of past repairs or restoration, reflecting normal wear and period use. We present pieces in an authentic state and do not routinely remove surface marks or apply rhodium plating to white gold. If you prefer a brighter finish, you may choose a cosmetic refresh by a local goldsmith.