A gem-set and diamond demi-parure

A pink tourmaline, synthetic opal and diamond demi-parure, comprising: a gold bangle of hinged construction, centring on a pair of triangular pink tourmalines, to shoulders set with brilliant-cut diamonds and polished sections of synthetic opal, inner circumference approximately 16.8cm, stamped 14K; together with a ring of similar design, size M, stamped 14K