A mid Victorian emerald and half pearl set hinged bangle, circa 1870s, the broad yellow gold bangle with central lozenge-shaped boss within a bead and ropetwist detailed surround, the central boss centred with a half pearl in a raised square setting with a rose-cut diamond to each corner, between four cushion-cut emeralds, each in flowerbud setting, internal bangle width 5.3cm. £800-1200