Ring size: EU 53 / 16.9 mm / US 6.5 / UK M½. Type of jewel: Retro rose-cut diamond bow ring Condition: In well-preserved condition, especially given this ring’s age. Style: Retro. A bow ring with a contrasting white metal appliqué and rose-cut diamond accents. Era: Circa 1950. Material: 18K warm yellow gold, touchstone tested, with a white metal appliqué, stated to be either 18K white gold or platinum. Diamonds: Five rose-cut diamonds. Rose-cut diamonds are traditionally described by number rather than by estimated weight, colour or clarity grades. Their varying and often irregular depth prevents reliable weight estimation while mounted, while formal colour and clarity grading is not customary in the trade for diamonds of this antique cutting style. All diamonds in this ring were individually tested with the Magilabs' EXA Natural Diamond Detector and identified as natural diamonds. Traditional gemstone associations: Diamond is the traditional birthstone for April and is associated with enduring love and strength. Hallmarks: Bearing Belgian hallmarks, including a maker’s mark in the form of a small barrel and the mark “0/50”. Dimensions: Ring head: 1.83 × 0.97 cm. Weight: 5.4 grams. Ring size: EU 53 / 16.9 mm / US 6.5 / UK M½. Ring sizes are professionally measured and rounded to the nearest millimetre; slight variations are standard and do not affect wear. Adin reference Nº: 26229-00077 - All jewels are delivered in an Adin jewellery box. Boxes shown in the photographs are display props unless stated otherwise. - With almost 50 years of experience in antique and vintage jewellery in Antwerp, Adin is recognised among fellow professionals for its specialist knowledge and professional integrity. Every jewel is accompanied by an Adin certificate featuring a photograph and detailed description, providing a useful record for identification and insurance purposes. - Shipped insured and registered. Collection in person is also welcome. - For shipments outside the European Union, import duties, taxes and other charges may apply and are the buyer’s responsibility. Please check the applicable requirements and costs in advance. - We invite you to browse our customer feedback for an impression of the service and satisfaction experienced by our clients. - See more of our pieces: https://auction.catawiki.com/lotsfrom/Adin - Antique and vintage jewellery may show signs of age and wear, including traces of earlier repairs or restoration. We preserve each piece in its authentic state and do not routinely remove surface marks or rhodium-plate white gold.