New York City, post-war Retro-Modern (c. 1950s). Statement pendant-brooch by Tiffany & Co., designed with bold geometric elements in high-polish 18K yellow gold with white gold ruby settings, centered by a semispherical dome set with 54 calibrated round faceted rubies totaling approx. 6.48 cts (natural, earth-mined, translucent vivid red) in flush prong settings. Convertible with double-hinge pin bars and a mechanical twisted lock, and fitted for wear as a pendant. Weight 37.5 g (24.10 dwt). Measures 58 x 58 x 16 mm (2.28 x 2.28 x 0.63 in). Hallmarks: stamped and signed “TIFFANY & CO. 18KT” with .750 gold standard. Very good conditions. All our diamonds and colored gemstones are naturally earth-mined. Any synthetic (lab-grown) stones will be clearly indicated in the description. Upon Request, Auction House may provide an appraisal. This will carry an additional cost. Appraisals are made by our in house GIA certified Gemologist.