A group of cultured pearl jewels

A group of cultured pearl jewels, comprising: a brooch, set with three cultured pearls of gold, grey and white tint, connected by lines of brilliant-cut diamonds in white gold, accented with circular-cut pink sapphires, length 5.8cm, 750 18K; a brooch and a ring, each set with cultured mabé pearls, the brooch set with brilliant-cut and baguette diamonds, each mounted in white gold, brooch length 3.9cm, ring size K; a cultured pearl and silver ring, size I1/2; a gilt metal ring designed as interconnected hoops, size H1/2; a pair of cultured pearl stud earrings; and four cultured pearl necklaces, one with a gold clasp, length 43cm, stamped 14K