{"product_id":"estate-platinum-1-50ctw-diamond-and-blue-sapphire-open-circle-floral-brooch-circa-1950s","title":"Estate Platinum 1.50CTW Diamond and Blue Sapphire Vintage Open Circle Floral Brooch","description":"his magnificent estate platinum open circle brooch is a masterwork of 1950s fine jewelry design, featuring fourteen (14) round brilliant diamonds totaling 0.51ctw graded G-H\/VS1-VS2 ranging from 1.8mm to 2.9mm, and eleven (11) round blue sapphires totaling 0.99ctw ranging from 2.4mm to 2.74mm, arranged in a beautifully detailed floral motif within an open circle silhouette measuring 1-1\/2\" in diameter, tested 950 platinum with a total weight of 10.4 grams, secured with a 1-1\/2 inch pin stem and locking C-latch. The alternating diamond and sapphire stations create a richly jewel-toned, sparkling wreath of brilliant white and deep royal blue against the cool, lustrous platinum setting. Dates to the 1950s.\u003cbr\u003e\u003cbr\u003e\nThe open circle floral brooch is one of the most beloved and collectible formats in mid-century fine jewelry, and this example achieves the format with exceptional gemstone quality — the VS1-VS2 clarity diamonds representing near-flawless stones of exceptional optical purity. The 950 platinum construction — the most prestigious precious metal standard in fine jewelry — provides an ideal cool, white setting that maximizes the brilliance of both the G-H diamonds and the deep blue sapphires with equal luminosity. The combination of a floral motif within an open circle silhouette evokes the elegant, nature-inspired design sensibility of 1950s fine jewelry at its most refined and feminine.\u003cbr\u003e\u003cbr\u003e\nAn exceptional find for the mid-century jewelry collector, platinum brooch enthusiast, or anyone seeking a significant estate platinum diamond and sapphire brooch of outstanding gemstone quality and genuine 1950s period provenance, this open circle floral brooch is a rare and distinguished addition to any fine antique jewelry collection. Add this extraordinary estate platinum brooch to your collection today.\u003cbr\u003e\u003cbr\u003eSome of the photographs featured on this website have been enhanced or processed using artificial intelligence (AI) tools. While we strive to ensure that all images accurately represent our products, services, and subjects, please be aware that AI processing may alter certain visual details from the original photograph. We are committed to transparency and want our visitors to have a clear understanding of how our visual content is produced. If you have any questions about a specific image or our use of AI technology, please don't hesitate to contact us at info@nelsoncoleman.com.","brand":"Estate Easton - Mark","offers":[{"title":"Default Title","offer_id":51220708622614,"sku":"252-00470","price":2795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/3863\/6822\/files\/252-470_8f305432-2215-450b-ad92-ba228119c0a3.png?v=1777923047","url":"https:\/\/nelsoncoleman.com\/products\/estate-platinum-1-50ctw-diamond-and-blue-sapphire-open-circle-floral-brooch-circa-1950s","provider":"Nelson Coleman Jewelers","version":"1.0","type":"link"}