18K YELLOW GOLD, DIAMOND, AND EMERALD PENDANT CHOKER.Made by Pampillonia Jewelers, Washington, DC. Squared, flexible foxtail chain centers chevron of 18 matched rectangular diamonds set side by side and held by "gemlok" bars, with one shield shape diamond, together weighing app. 2.60 ct., suspending emerald-cut emerald weighing app. 1.80 ct Estimate $3,500-5,000