At the hammer

The Hammer No. 2·Sotheby's Geneva·12 May 2026·Live auction GE2602

High Jewelry

$29.9m in total, buyer’s premium included

Lot 617, a matched pair of D Flawless and Internally Flawless type IIa diamonds of 18.38 carats each
© Sotheby’s 2026

The top estimate did not sell: lot 621, a 6.03 ct Fancy Vivid Blue diamond, Internally Flawless, type IIb, from the Cullinan mine, estimated USD 9.2m to 12.3m. The top price went to a matched pair of 18.38 ct D diamonds, lot 617, at USD 3.2m.

115 of 124 lots sold

Notes

Prices paid

Every price is the price paid, buyer’s premium included, as Sotheby’s publishes it. Prices per carat and the comparisons with the estimates use it too; Sotheby’s estimates do not include the premium.

Dollars

Swiss francs converted at the ECB reference rate of 12 May 2026, the day of the sale: CHF 1 = USD 1.2798.

Buyer’s premium

Reconstructed at 28% of the hammer price: every price but one turns back into a round hammer price at that rate. Lot 617 (CHF 2,536,000) implies a lower rate above a threshold; we assume a hammer price of CHF 2,000,000. Nothing on this page uses the hammer prices.

The sale read

The live sale GE2602 only: 124 lots, 115 sold, CHF 23,361,472 in total, the figure Sotheby’s published, to the franc. The online sale held alongside it (Fine Jewelry, GE2612) is not included.

Prices are the prices paid, buyer’s premium included, as Sotheby’s publishes them; prices per carat and comparisons with the estimates use them too (Sotheby’s estimates do not include the premium). Prices in USD at the ECB rate of 12 May 2026. Photographs © Sotheby’s 2026.

Source: Sotheby’s catalogue and results, live sale GE2602 (124 lots), read lot by lot on 2026-10-16. Total as published by Sotheby’s: CHF 23,361,472; the lot prices add up to exactly the same. The online sale (Fine Jewelry, GE2612) is not included. Prices realised, buyer’s premium included.