Natural pearl pendant

A pearl and diamond brooch, early 20th century and later, the early 20th century pendant set with a crossed arrangement of natrial pearls measuring approximately 4.5-7mm diameter, spaced by foliate motifs in millegrain-bordered platinum set with rose-cut diamonds, back tested as 14k gold, suspended by chains from a later 9k gold bow brooch, total length 4.7cm, brooch with British hallmarks, circa 1976