Striking Art Deco convertible pendant-brooch, America, 1930, crafted in solid .900/.999 platinum with geometric patterns and millegrain settings. Features a bezel-set marquise brilliant diamond (0.89 ct, D, SI1, GIA certified), 20 baguette and French carré diamonds (1.38 ct, F, VS2), and 166 pavé-set old European/single cut diamonds (1.70 ct, F/G, VS/SI). Measures 47 x 21 mm (1.85 x 0.83 in), weighing 17.3 grams. Fitted with removable hinge bar and retractable shackle for brooch or pendant wear. 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.