Kate, 43, wore a pair of custom earrings from Kiki McDonough which are worth £3,500. The design features a green tourmaline and amethyst stones, which are surrounded by diamonds set in yellow gold.

earrings, and necklaces. In the second part, Alchemy, bold colours juxtaposed against classic ribbons of white and yellow gold make a vibrant combination. In standout pieces, such as in the necklace ...