Art Deco Diamond Platinum Vintage Engagement Ring

Circa 1925 This Art Deco era ring of a unique geometric design is finely crafted in platinum. It features a 1.17 carat Old European cut diamond (I color, VS2 clarity) framed by numerous small old cut diamonds. Estimated total diamond weight is 2.90 carats. The bezel measures 21 x 14 mm (13/16 x 4/8 in.) Marked with 950 platinum standard and Austrian (Vienna) butterfly shape assay mark. Ring size 6.5 (17 mm) resizable