A collection of jewels

A collection of jewels, comprising: an Art Deco bangle in bicoloured silver, inner circumference 17.1cm; French assay mark for silver, French maker's mark BP&FJ; an Art Deco white gold and cultured pearl brooch, centring on the letter S, length 3cm, French import assay mark, possibly converted from a clip brooch; a pearl and calibré-cut sapphire ring mounted in white gold, size P, French assay mark, pearls untested; a silver necklace composed of collet-set emerald-cut green pastes, length 38.5cm; and a gold ring set with brilliant-cut diamonds, size K1/2, French assay and maker's marks