Antique ruby and diamond crescent brooch. Set with eleven cushion shape old cut natural unenhanced Burmese rubies in open back claw settings with a combined approximate weight of 5.80 carats, enriched by seventy five round rose cut diamonds, graduated in size in open back grain and rubover settings with a combined approximate weight of 0.75 carats, all to an elaborate crescent brooch with a beautiful repeating openwork design and silver grain decorations, neatly pierced gallery and intricately pierced backholing, fitted to reverse with a secure gold hinged pin and scroll clasp. Marked 18 carat gold and silver, French, circa 1885, accompanied by a fitted box and Gemmological Certification Services report #5776-4528.
