Made by Harry Winston. The necklace was purchased 1967 by King Faisal of Saudi Arabia as a gift to the Queen at the state visit to the UK.
Queen Elizabeth II
Diana, Princess of Wales
Sophie, Countess of Wessex
Visit to Australia (Diana, Princess of Wales)
Pre-wedding gala dinner for the Hereditary Grand Duke of Luxembourg in 2012 (Sophie, Countess of Wessex)