To celebrate Kate Middleton and Prince William’s 10-year wedding anniversary on Thursday, Kensington Palace released a new set of photos of the royal couple — and Wills’ present for Kate may have been put on display.

The mother of three paired the sparkling piece with a sold-out blue floral wrap dress by Ghost ($308), which she previously wore during the couple’s 2019 royal tour of Pakistan.

The shade is perhaps fortuitous for the couple, as Middleton’s engagement ring, which previously belonged to Princess Diana, features a giant blue sapphire surrounded by diamonds — not unlike the floral style of her new necklace

Wills proposed with the ring in 2010, and Middleton wore a blue Issa wrap dress to celebrate the announcement