{"product_id":"vintage-18k-white-gold-invisible-set-ruby-and-diamond-flower-brooch","title":"Vintage 18k White Gold Invisible Set Ruby and Diamond Flower Brooch","description":"\u003cdiv\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eModeled as a flower on a slender, arching stem, this vintage Art Deco inspired 18k white gold brooch combines dimensional ruby petals with pavé-set round brilliant cut diamonds. Closely fitted mixed cut rubies follow the undulating contours and curled edges of the flower’s petals, forming a continuous mosaic of rich pink-red color. Known as serti invisible, this setting technique requires precisely calibrated gemstones with grooved girdles that lock into a fine framework concealed beneath their surfaces, eliminating visible prongs between the stones. Perfected during the 1930s, the high jewelry technique of invisible setting is a favorite for dimensional floral compositions such as this. An open lattice follows the petal contours on the reverse, and a long hinged pin with a safety catch secures the brooch.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eWeight: 20.0 Grams\u003c\/div\u003e\u003cdiv\u003eStone: Roughly 18.9ctw Mixed Cut Rubies\u003c\/div\u003e\u003cdiv\u003eStone: Round Brilliant Cut Diamonds\u003c\/div\u003e\u003cdiv\u003eMeasurements: 77 x 36 x 10mm\u003c\/div\u003e\u003cdiv\u003eHallmark: 750\u003c\/div\u003e\u003cdiv\u003eMetal: 18k White Gold\u003c\/div\u003e\u003cdiv\u003eNote: Ruby weight is a rough estimate; the specialized cutting required for invisible settings prevents a very accurate weight estimate. Small chip to one ruby.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eItem #: BR-2020-092926-13\u003c\/div\u003e","brand":"Blue Ribbon Rarities","offers":[{"title":"Default Title","offer_id":41428705738824,"sku":"BR-2020-092926-13","price":16995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2223\/5059\/files\/DSC_7050_4347314.jpg?v=1792631250","url":"https:\/\/www.blueribbonrarities.com\/products\/vintage-18k-white-gold-invisible-set-ruby-and-diamond-flower-brooch","provider":"Blue Ribbon Rarities","version":"1.0","type":"link"}