{"product_id":"rare-18th-century-portuguese-cluster-ring-minas-novas-rock-crystal-antique-georgian-ring","title":"18세기 포르투갈 클러스터 반지","description":"\u003cp data-start=\"232\" data-end=\"577\"\u003eA rare Portuguese ‘minas novas’ rock crystal ring, crafted circa 1770 in 15K gold. This marquise-shaped cluster features a central faceted crystal surrounded by two concentric rows of foil-backed stones, separated by a typical Portuguese gold beaded border. The stones—ranging from seafoam green to dusty blue—glisten beautifully in candlelight.\u003c\/p\u003e\n\u003cp data-start=\"579\" data-end=\"786\"\u003eOriginating from the mines of Minas Gerais, Brazil, 'minas novas' quartz became central to Portuguese jewellery design in the late 18th century, enabling jewellers to create rich, gem-laden pieces like this.\u003c\/p\u003e\n\u003cp data-start=\"788\" data-end=\"1122\"\u003eThe closed-back bezel curves to fit the finger, and although the shank was replaced in the late 19th or early 20th century, it matches the original in tone and style. The ring sits flat on the finger and remains in great wearable condition. Minor age-related wear includes facet abrasions, some foil darkening, and patina to the gold.\u003c\/p\u003e\n\u003cp data-start=\"1124\" data-end=\"1220\"\u003eA comparable example appears in \u003cem data-start=\"1156\" data-end=\"1200\"\u003eRings: The Alice and Louis Koch Collection\u003c\/em\u003e (nos. 957 and 958).\u003c\/p\u003e\n\u003cp data-start=\"1222\" data-end=\"1310\"\u003eUK size N½ \/ US size 7\u003cbr data-start=\"1244\" data-end=\"1247\"\u003eWeight: 7.41g\u003cbr data-start=\"1260\" data-end=\"1263\"\u003eCluster head: 28mm x 18mm\u003cbr data-start=\"1288\" data-end=\"1291\"\u003eTests as 15K gold\u003c\/p\u003e\n\u003cp data-start=\"1312\" data-end=\"1422\"\u003eLimit water exposure to preserve the foil backing. A fine piece of late 18th-century Portuguese craftsmanship.\u003c\/p\u003e","brand":"Ravensbury Antiques","offers":[{"title":"Default Title","offer_id":46954368827700,"sku":"","price":5155000.0,"currency_code":"KRW","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6784\/5428\/files\/0G2A4713.jpg?v=1749588708","url":"https:\/\/ravensburyantiques.com\/ko-kr\/products\/rare-18th-century-portuguese-cluster-ring-minas-novas-rock-crystal-antique-georgian-ring","provider":"Ravensbury Antiques","version":"1.0","type":"link"}