Bonhams Exceptional Jewels Sale in London Features Boucheron Tiara Estimated at £200,000–300,000
The Facts
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. Other highlights include a Cartier sautoir from Dame Nellie Melba (estimate £60,000–80,000), a Bulgari emerald ring, and a Sterlé Art Deco necklace. The sale also includes Sidmouth family jewels, such as a portrait diamond jewel of Emperor Alexander I (estimate £80,000–120,000).
The Signal
The tiara's reappearance after a century offers a rare opportunity for collectors of historic signed jewellery. Its provenance as a direct commission adds cachet, and the estimate reflects strong demand for antique diamond tiaras. The single-owner collections, from aristocratic holdings to a diva's jewels, highlight Bonhams' strategy of sourcing private consignments. For collectors, pieces with documented histories often command premiums.
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- People: Jennifer Tonkin, Dame Nellie Melba, Henry Addington, 1st Viscount Sidmouth, Emperor Alexander I of Russia
- Auction Houses: Bonhams
- Locations: London
- Prices: £200,000–300,000, £80,000–120,000, £15,000–20,000, £10,000–15,000, £60,000–80,000
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