A group of gold and gem-set jewels

A group of gold and gem-set jewels, comprising: a pair of diamond and black cultured pearl pendent earrings, length 4.3cm, post fittings; a diamond and cultured pearl pendant, length 2.7cm; and three pendants of folded ribbon design, set with brilliant-cut diamonds, channel-set calibré-cut emeralds and brilliant-cut diamonds, and a pink tourmaline, an opal doublet and a brilliant-cut diamond respectively, length of longest 3.1cm, all mounted in gold