Two sets of buttons and a pair of cufflinks, 19th/early 20th century

Two sets of buttons and a pair of cufflinks, 19th/early 20th century, comprising: one set of five buttons, each composed of circular sections of mother of pearl centring on circular-cut diamonds and sapphires, 1.3cm diameter each; a set of six buttons, each set with polished agate, in gilt metal mounts, 1.4cm diameter each, fitted case; and a pair of mother of pearl and diamond cufflinks, each end of baton design, set with circular-cut diamonds and polished sections of mother of pearl, to chain connectors, each end 2.3cm, case stamped Collingwood Ltd