Bonhams Exceptional Jewels Sale in London Features Boucheron Tiara Estimated at £200,000–300,000

Bonhams presents its Exceptional Jewels sale in London on 11 June 2026, featuring six single-owner collections. Leading the auction is a Boucheron diamond bandeau tiara from 1924, estimated at £200,000–300,000. The tiara, unseen since its commission, features a 3.60-carat diamond.