Stone called Queen Camilla's decision to wear the brooch a "deeply symbolic choice" as "emeralds represent rebirth, renewal, and enduring love." The Cambridge Cluster Emerald and Diamond Brooch is estimated to be worth as much as $50,000, according to Stone.

Queen Camilla stepped out in green with a touching tribute to Queen Elizabeth as she attended Royal Ascot alongside King Charles. The royal couple was accompanied by Prince William in the

Queen Camilla joined husband King Charles and other members of the royal family at day 2 of Royal Ascot on June 18. After wearing a brooch worth $2.5 million to the opening day of Ascot on June 17, on Wednesday the Queen wore another brooch that was a tribute to another Queen—her late mother-in-law,