Van Cleef & Arpels turquoise and diamond Sultana ring. Set with eighteen round cabochon natural unenhanced turquoise of varying sizes in open back claw collet settings with an approximate combined weight of 0.70 carats, further set with nineteen round old cut diamonds in open back claw collet settings with an approximate combined weight of 0.85 carats, to an openwork bombe cluster with intricate piercing throughout and circular backholing, conforming to the finger and tapering down to a solid D-shape shank. Marked 18 carat yellow gold, London import mark and date letter, maker's mark 'VCA' for Van Cleef & Arpels, French, circa 1976.
