Exceptional Art Nouveau brooch, Austria or Germany, circa 1890, crafted in 18K yellow gold with exquisite Plique-à-Jour enamel work. Features a hanging eight-prong set European rose cut diamond (0.50 ct, F, VS/SI), 52 mixed old European rose cut diamonds (0.78 ct, G, VS/SI), three bezel-set round rubies (0.18 ct), and three graduated round white pearls. Measures 42 x 28 mm (1.65 x 1.10 in), weighing 6.85 grams. Fitted with a hinged stem pin bar and security hook. A striking example of period artistry. 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.