British jeweller Kiki McDonough is a favourite of Kate, Duchess of Cambridge. She has several pieces and I think she also favours blue topaz as a stone.

These earrings were recently worn on a solo visit she made to Luxembourg. They are cushion cut topazes with diamond halos set in 18k white gold. And unlike many of the pieces worn by royals, these can be yours if you have a spare £3,500. On the one hand, while I think it’s fine that Kate has her own style, it’s also a shame she hasn’t had more access to the royal jewel box. I know I’d want to be making best use of those pieces if allowed!