Princess Anne attends the Founder’s Day Parade (Photo: Eamonn M. McCormack/Getty Images)

On Thursday, the Princess Royal attended the annual Founder’s Day Parade at the Royal Hospital Chelsea, where she wore a very sparkling piece of jewelry.

Photo: Eamonn M. McCormack/Getty Images

Founder’s Day is also known as Oak Apple Day, and the Chelsea Pensioners always affix oak leaves to their uniforms for the parade. (It’s because this day in part commemorates Restoration Day, a old national British holiday that involves Charles II hiding out in an oak tree. I’ll direct you to Wikipedia for more.) Princess Anne secured her oak leaves with a diamond and pearl brooch in the shape of a wild rose.

Photos: Eamonn M. McCormack/Getty Images

Here’s a closer look at the details of the brooch from today’s parade.

Photo: BEN STANSALL/AFP/Getty Images

If the brooch looks familiar, that’s probably because it’s been in Anne’s collection for a while. One of her most prominent outings of the piece was the 2011 wedding of her nephew, the Duke of Cambridge.

The British royals visit Cardiff (Photo: Ben Birchall – WPA Pool/Getty Images)

The Big Four of the British royal family — Queen Elizabeth II, the Duke of Edinburgh, the Prince of Wales, and the Duchess of Cornwall — are in Cardiff today for a variety of engagements, including the opening of the Welsh National Assembly. Here’s a look at the jewels that they brought with them…

Photo: Richard Stonehouse/Getty Images

The Queen wore a brooch that she’s had for nearly 70 years: the Flower Basket Brooch. It’s fitting that she chose it for a visit to Wales, because it was given to her by her parents to mark the birth of the Prince of Wales in 1948.

Photo: DOMINIC LIPINSKI/AFP/Getty Images

Here’s a fairly good close-up of the details of the brooch from today’s Cardiff visit. You get a good look here at the ruby, diamond, and sapphire flowers in the diamond “basket,” plus the emerald ribbon that borders the basket’s base.

Photo: Steve Parsons – WPA Pool/Getty Images

We didn’t get great photos of Camilla or her jewels today, unfortunately, but in this image taken at the National Assembly, you can see some of the details. She wore one of her jewelry uniforms: multi-stranded pearl necklace with diamond clasp, pearl and diamond earrings, and a brooch. Her brooch choice was also very appropriate: her diamond and gray pearl Prince of Wales feather brooch. You can see a much clearer look at the brooch from another of our recent posts.