Platinum, Silver, Emerald and Diamond Pendant-Necklace The delicate platinum chain joined by one old-mine marquise-shaped and 5 collet-set old European-cut diamonds, suspending one drop-shaped cabochon emerald ap. 19.2 x 12.15 x 11.92 mm., capped by a silver disc edged by small rose-cut diamonds, pendant 19th century, chain c.. 1920. Length 16 inches. With AGL report no. 1114822 stating Colombian origin, with Insignificant Traditional clarity enhancement. C