The High Jewelry sale held in Geneva this past May achieved exceptional results, with 97% of the lots successfully sold. A highlight of the auction was the sale of the Mediterranean Blue diamond, an extraordinary 10.03-carat fancy vivid blue diamond, which realised CHF 17.9 million (US$ 21.5 million), marking it as the most valuable diamond sold at auction thus far in 2025.

Following this notable success, Sotheby’s is honoured to present its upcoming High Jewelry sale, scheduled for 12th November. This highly anticipated event will offer a distinguished selection of masterpieces from the world’s most esteemed jewellery houses, including Cartier and Van Cleef & Arpels, alongside a superb array of coloured gemstones and exceptional diamonds.

We are currently accepting consignments for and invite you to contact our experts to receive a free and confidential valuation, to do so please visit Sell with Sotheby's or contact a member of the Jewellery Department.

For a free and confidential valuation please contact:

Jessica Wyndham

Director | Head of High Jewelry, Europe

Geneva

+41 22 908 4841

JESSICA.WYNDHAM@SOTHEBYS.COM

Jemima Chamberlain-Adams

Deputy Director | Head of Sale, Fine Jewelry Geneva

+41 22 908 4760

JEMIMA.CHAMBERLAIN-ADAMS@SOTHEBYS.COM

Simon Giannini

Deputy Director | Specialist

Geneva

+41 22 908 4851

SIMON.GIANNINI@SOTHEBYS.COM

Saumya Khimji

Associate Specialist

Geneva

+41 22 908 4831

SAUMYA.KHIMJI@SOTHEBYS.COM

Vincent Vanhoucke

Cataloguer

Geneva

+41 22 908 4882

VINCENT.VANHOUCKE@SOTHEBYS.COM