Queen Elizabeth the Queen Mother wears three strands of the Greville Festoon Necklace and the Centenary Rose Brooch for a gala at the Royal Opera House in Covent Garden celebrating her 101st birthday, August 2001; more on the necklace here and the brooch over here!

Princess Margaret of the United Kingdom wears a modern necklace set with marquise diamonds, as well as a matching bracelet, ring, and earrings, to attend the International Dance Festival in Paris, June 1993; the complete set of jewels sold at Christie’s for £78,000 in 2006