Delicate Art Deco convertible pendant-brooch, America, circa 1930s, crafted in solid .900 platinum (electronically tested) with crisp geometric openwork and fine millegrain throughout. Fitted with a hinged horizontal bar for brooch wear and a pendant fitting for chain wear. Set with a GIA-certified pear brilliant diamond in bezel (1.13 ct, I color, SI2), 12 marquise brilliants in millegrain bezels totaling 1.20 ctw (F/G color, VS2), and 73 old European/round single-cut diamonds in French pavé totaling 1.83 ctw (F/G color, VS/SI). Accented with 17 channel-set French calibre-cut Colombian emeralds totaling 0.85 ctw. Weight 11.70 grams; measures 34 x 39mm. Unmarked; electronically tested as .900 platinum. 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.