{"product_id":"bague-plaque-geometrique-retro-en-or-jaune-18k-platine-et-diamants","title":"18k yellow gold retro geometric signet ring, platinum and diamonds ","description":"\u003cp\u003eA characterful retro-era ring, crafted in 18k yellow gold and platinum, set with approximately 2.85 ct of old-cut diamonds. The geometric plaque motif is set with H-J color diamonds, creating a play of symmetry and vintage brilliance. Bold, architectural style typical of the 1940s.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDiamonds: approximately 2.85 ct, color H-J, clarity SI1-I1, old cut.\u003c\/li\u003e\n\u003cli\u003eMetals: 18k yellow gold and platinum.\u003c\/li\u003e\n\u003cli\u003eRing size: 58 (FR).\u003c\/li\u003e\n\u003cli\u003eResizable within reasonable limits.\u003c\/li\u003e\n\u003cli\u003eWeight: 10.9 g.\u003c\/li\u003e\n\u003cli\u003eCondition: very good condition, lightly used with minor signs of wear.\u003c\/li\u003e\n\u003cli\u003ePeriod of creation: retro.\u003c\/li\u003e\n\u003cli\u003eMain material: diamond.\u003c\/li\u003e\n\u003cli\u003eGender: unisex.\u003c\/li\u003e\n\u003cli\u003eOffers: no.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eHistorical context: the jewelry industry was heavily affected by the outbreak of the Second World War in the 1940s. Precious metals, particularly platinum, became scarce and, in some cases, their sale was even prohibited. Palladium was used as a substitute for platinum in the war effort. To optimize the limited supply of gold, a low-carat gold alloy containing a higher proportion of copper was used, giving the gold a slightly reddish hue. Thanks to different alloys, gold could appear in several colors within the same piece. Gold was also worked in various ways, including woven, braided, and coiled forms. Techniques such as meshwork, cannetille, and openwork filigree motifs reappeared in jewelry. Different textures were also used within the same design, with matte finishes placed next to polished finishes to emphasize the pattern. Gold became the main metal used in jewelry during the 1940s and 1950s.\u003c\/p\u003e\u003cp\u003eOld-cut diamond: the old-cut diamond is prized for the charm and character of vintage jewelry. Recognizable by its antique appearance, this cut dates back to the 18th century and preceded the modern brilliant cut. Old-cut diamonds are characterized by a slightly cushion-shaped form, a high crown, a small table, a deep pavilion, and a large open culet, elements that contribute to their unique and romantic appeal.\u003c\/p\u003e\u003cp\u003eHistorically, the old cut was the most popular diamond cut during the Georgian and Victorian periods. These diamonds were cut by hand, long before modern technologies, giving each stone unique proportions and personality. This cut was designed to maximize the diamond’s sparkle in candlelight, producing a warm and luminous brilliance.\u003c\/p\u003e\u003cp\u003e18k gold: 18k gold is a sought-after material in fine jewelry for its rich color, durability, and value. The 18k marking indicates a composition of 75% pure gold and 25% alloy metals, such as copper, silver, or palladium. This combination offers a balance between the softness of pure gold and the strength needed to create durable jewelry.\u003c\/p\u003e\u003cp\u003eplatinum: platinum is a rare and precious metal, recognized for its strength, purity, and lasting beauty. With its naturally white luster and resistance to tarnish and corrosion, it is associated with luxury and durability in fine jewelry. Its density and weight give it a precious feel, while its purity, often 95%, makes it an ideal metal for setting diamonds and other precious stones.\u003c\/p\u003e ","brand":"Binenbaum Antiques \u0026 Jewelry","offers":[{"title":"58","offer_id":54804764623177,"sku":"A4F65C224C8A4F5F969A6C561F2E79AA","price":7695.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0342\/5311\/1432\/files\/mp_53881_0.jpg?v=1783433571","url":"https:\/\/58facettes.com\/products\/bague-plaque-geometrique-retro-en-or-jaune-18k-platine-et-diamants","provider":"58 Facettes","version":"1.0","type":"link"}