Lot of four yellow gold (750) collar pins decorated with a string knot, a Dutch rose-cut diamond in claw setting, a white mabe pearl or an onyx plaque in a polylobate setting. H. 6, 6.5, 7 and 7 cm. - Net weight : 1.1 g - Total gross weight : 6.5 g. Scratches; some scratches and shocks or twists.