Early 20th C diamond set 'B' brooch, round cut diamonds, mounted in white and yellow metal testing as silver and 9 ct, pin and catch fitting, measuring 2 x 1.8cm, and oval belcher link chain, measuring 54 cm in length, with lobster claw clasp, in 9 ct . Brooch has a mixture of diamond cuts, rose and old cut diamonds, largest diamond in curl chipped on girdle, estimated total diamond weight 0.14 carat, pin and catch working, gross weight 1.7 gramsChain hallmarked London 1988, gross weight 5.6 grams