A beautiful, delicate American Art Deco jewel from the 1930s, designed as a versatile convertible necklace-to-brooch and expertly crafted in .900 platinum with .100 iridium. The piece is accompanied by its period 16.5 in (41.9 cm) chain and engineered with double side clips to attach/remove the chain, plus a hinged horizontal pin bar with a mechanical security lock for confident brooch wear. Set with exceptional graduated diamonds (G/H color, VS2 clarity), it features 44 prong-set round brilliant cuts (approx. 3.08 ctw, 1.9–3.1 mm), 18 channel-set calibre straight baguettes (approx. 0.90 ctw, 2.1–4.0 mm), and 2 prong-set rare Calf step-cut diamonds measuring 6 x 6 x 6 mm (approx. 1.04 ctw). The main element weighs 12.2 g and measures 46 x 28 mm (1.81 x 1.10 in); the chain weighs 2.8 g. Accompanied by a descriptive appraisal #6402-E dated October 8, 2016, detailing gemstone cuts, measurements, weights, and characteristics, plus a presentation jewelry box; in excellent condition, showing only light normal wear, with no damage to the platinum and all stones secure, and the piece carefully inspected to confirm condition and authenticity. 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.