A 19th century pearl and diamond necklace; featuring three scallop shells each set with a central natural pearl and 24 rose cut diameter a 19th century pearl and diamond necklace; featuring three scallop shells each set with a central natural pearl and 24 rose cut diamonds with black enamel detail to buckle surmounts on rope chian all in 15ct gold, length 40 cm., wt 24.5g