A set of Art Deco dress cufflinks and studs

A set of Art Deco dress cufflinks and studs, each black onyx rectangular link is centred with a small diamond in white gold, fitted case, a pair of moonstone and sapphire-mounted circular platinum and gold dress cufflinks and studs, each circular moonstone is centred with a surround of calibré-cut sapphires, French control marks, and a pair of black cultured pearl and diamond cufflinks, each link designed as a bar of three pearls and four small diamonds in white gold