{"product_id":"rare-antique-art-deco-platinum-4-00ctw-diamond-lab-sapphire-brooch-pendant-igi","title":"Rare Antique Art Deco Platinum 4.00ctw Diamond \u0026 Lab Sapphire Brooch Pendant IGI","description":"\u003cdiv\u003eAn exquisite, highly intricate Art Deco geometric brooch hand-crafted in platinum. This museum-quality statement piece features a symmetrical lattice structure with delicate milgrain borders, chevron-cut accents, and elaborate openwork filigree. The centerpiece is encrusted with 103 sparkling natural diamonds framed by 30 deep blue calibre-cut synthetic sapphires, a signature hallmark of early-20th-century Art Deco fine jewelry. Complete with an official IGI certification for total authenticity and grading verification.\u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003eDiamond Specifications\u003c\/strong\u003e\u003c\/div\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Diamond Count:\u003c\/strong\u003e 103 Natural Diamonds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Diamond Carat Weight:\u003c\/strong\u003e 4.00 Carats Total Weight (4.00 ctw)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond Color:\u003c\/strong\u003e Near Colorless\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond Clarity:\u003c\/strong\u003e VS1 – SI2 (With exceptional cut quality and brilliance on the central larger stones)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\u003cstrong\u003eGemstone Specifications\u003c\/strong\u003e\u003c\/div\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent Gemstones:\u003c\/strong\u003e 30 Calibre-Cut Laboratory-Grown Sapphires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGemstone Details:\u003c\/strong\u003e French\/calibre channel-set synthetic sapphires providing rich, vivid blue geometric contrast throughout the design. \u003cem\u003e(Note: Synthetic sapphires were widely synthesized and favored by master jewelers during the Art Deco era of the 1920s–1930s for their uniform, intense color.)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\u003cstrong\u003eMounting \u0026amp; Measurements\u003c\/strong\u003e\u003c\/div\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e Platinum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Weight:\u003c\/strong\u003e 16.17 Grams (10.40 dwt)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Approximately 1.5 Inches Long × 1.0 Inch Wide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e IGI Certified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra \/ Style:\u003c\/strong\u003e Genuine Art Deco (c. 1920s–1930s)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003c\/h3\u003e","brand":"Media Antiques \u0026 Jewelry","offers":[{"title":"Default Title","offer_id":46312594276586,"sku":"125103122","price":8990.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/9510\/4746\/files\/DSC_6256_4195130.jpg?v=1790051898","url":"https:\/\/www.mediajewelry.com\/products\/rare-antique-art-deco-platinum-4-00ctw-diamond-lab-sapphire-brooch-pendant-igi","provider":"Media Antiques \u0026 Jewelry","version":"1.0","type":"link"}