The Duchess of Windsor, Wallis Simpson, possessed one of the most remarkable and valuable jewelry collections in history, a ...

For the Duke of Wellington's Waterloo banquet in 2015, the Duchess of Cornwall wore two striking pieces from the Greville bequest (along with her beloved pear-drop earrings and go-to diamond ...

It features 739 brilliant and 149 baton diamonds. Lotus Flower Tiara Kate Middleton is seen leaving Kensington Palace for the Diplomatic reception at Buckingham Palace, Dec. 3, 2013.

Duchess Kate also wore a brand new accessory with a lot of meaning, one we've yet to see her wear. Adorned on the left shoulder of her pale blue Alexander McQueen gown, Kate wore the Royal Family ...

So, let's start with the big ticket items up for auction: The Duchess's diamond tiara, designed and fabricated by Cartier for her in 1930—in other words, a moment in fashion history when tiaras ...