Art Deco Ceylon sapphire solitaire ring. Set with an octagonal emerald-cut natural unenhanced Ceylon sapphire in an open back four claw setting with an approximate weight of 4.51 carats, to an impressive solitaire with a rectangular pierced open collet featuring linear details, stylised claws and fine shaped backholing, flanked by raised inwardly tapering shoulders which smooth to a solid squared shank. Marked platinum, English, circa 1925, accompanied by Gemmological Certification Services report #77110-83.
