King Charles III and Queen Camilla attend the races at Royal Ascot on June 19, 2025 (Andrew Matthews/PA Images/Alamy)
The royal women of the House of Windsor were out in force for Ladies’ Day at Royal Ascot on Thursday, watching the Gold Cup while wearing spectacular Cartier diamonds and aquamarines.
King Charles III and Queen Camilla attend the races at Royal Ascot on June 19, 2025 (Andrew Matthews/PA Images/Alamy)
Once again, King Charles III and Queen Camilla led the royal party as they arrived for the third day of this year’s Royal Ascot race meeting. Also in attendance on Gold Cup Day were the Princess Royal and Vice Admiral Sir Timothy Laurence, the Duke and Duchess of Edinburgh, Princess Beatrice and Edoardo Mapelli Mozzi, Zara and Mike Tindall, and Peter Phillips and Harriet Sperling.
King Charles III attends the races at Royal Ascot on June 19, 2025 (Andrew Matthews/PA Images/Alamy)
King Charles once again added a few jewelry touches to his morning suit for the occasion—tie pin, cuff links, signet ring. The details of this particular tie pin are a little difficult to discern from the photographs available. If I squint, I can almost convince myself that this is a little miniature tie pin version of the Great George.
Queen Camilla attends the races at Royal Ascot on June 19, 2025 (Maureen McLean/Alamy)
There was no doubt about the brooch that Queen Camilla chose for Ladies’ Day: the grand Jardine Star Brooch, dazzling in all of its nineteenth-century diamond glory.
Queen Elizabeth II arrives for day four of Royal Ascot on June 21, 2019 (Imago/Alamy)
The brooch was a favorite piece of the late Queen Elizabeth II, who received it as a bequest in the early 1980s. Royal jewelry historian Leslie Field tells us, “In 1981 the Queen was left a late-Victorian diamond star brooch by Lady Jardine, which she has worn on many occasions. It has a collet diamond on a knife-wire between each of its eight points.” It went on to become one of the late Queen’s most-worn brooches.
Queen Camilla attends a garden party at Buckingham Palace in London on May 14, 2025 (Aaron Chown/PA Images/Alamy)
Here’s another look at a fabulous close-up of the brooch from the May 2025 garden party.
The Princess Royal attends the races at Royal Ascot on June 19, 2025 (James Manning/PA Images/Alamy)
There was also another member of the royal family wearing Cartier jewelry at the races. The Princess Royal paired the late Queen’s favorite three-row pearl necklace with a Cartier aquamarine and diamond brooch.
Queen Elizabeth arrives at the Royal Opera House, Covent Garden for a gala performance of Frederick Ashton’s new ballet, Tiresias, July 1951 (SuperStock/Alamy)
The brooch was originally the centerpiece of a tiara from the collection of Queen Elizabeth the Queen Mother. The aquamarine and diamond jewel has a pinecone (or “pineflower”) design theme. She wears the original tiara here at the ballet in 1951. (You’ll also spot another Cartier aquamarine and diamond jewel pinned to her handbag.)
The Duchess of Edinburgh attends the races at Royal Ascot on June 19, 2025 (Andrew Matthews/PA Images/Alamy)
The Duke and Duchess of Edinburgh rode alongside Princess Anne and Sir Tim in the carriage procession. Sophie wore a lovely dress with a clover pattern and a hat to match. She accessorized with diamond earrings from Collins & Sons and a necklace with a heart-shaped pendant—a fitting choice, as Thursday marked the Edinburghs’ 26th wedding anniversary.
Princess Zahra Aga Khan and Princess Beatrice attend the races at Royal Ascot on June 19, 2025 (David Davies/PA Images/Alamy)And here are two more princesses riding in the carriage procession: Princess Beatrice and Princess Zahra Aga Khan, daughter of the late Aga Khan IV and sister of the present Aga Khan. Zahra wore lovely pearls for the day, while Beatrice accessorized with a spectacular pair of diamond earrings from Chopard.
Zara Tindall attends the races at Royal Ascot on June 19, 2025 (Andrew Matthews/PA Images/Alamy)
The royal party on Thursday also included Princess Anne’s children. Zara Tindall was elegant in black and white, wearing a pair of earrings from a favorite designer, Laurence Coste. The Cosima Earrings feature “a coloured glass top with a Lalique effect” and baroque pearl drops.