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 made a heartfelt gesture towards the late Queen Elizabeth as she stepped out at Ascot alongside King Charles. The royal couple were joined by Prince William in the royal carriage procession to the races after Princess Kate pulled out of attending the event last minute.

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,