EDWARDIAN PLATINUM AND DIAMOND LAVALIERE/PENDANT. 10 mm and 12 mm mabe pearls centered by 40 old European cut round diamonds in drop shape setting with bowknot motif; delicate oblong link flexible chain with tongue-and-groove box clasp. - Pendant. L: 1 3/4 in. Chain portion, L: 16 in. Estimate $1,500-2,500