Phillips’s “Geneva Jewels Auction” on Monday achieved CHF 13.7 million ($17 million) in total sales, with 96 of 113 lots sold (85% sell-through rate). Twelve lots from the Vanderbilt family sold out, contributing CHF 3.42 million ($4.25 million)—four times their low estimate. The top lot was “The Vanderbilt Sapphire,” a 42-karat sugarloaf Kashmir sapphire and diamond brooch by Tiffany & Co., which sold for CHF 2.88 million ($3.57 million), exceeding its $1–1.5 million estimate. Other highlights included a Cartier Magnificent diamond brooch ($560,582), a Bulgari “Serpenti” belt ($368,383), and multiple Cartier “Panthère” jewels. The auction drew over 1,600 visitors and bids from 44 countries.
The sale underscores the enduring market demand for historic, provenance-rich period jewels, particularly those tied to Gilded Age American dynasties like the Vanderbilts. The strong performance—especially the Vanderbilt Sapphire’s premium over estimate—signals that collectors continue to value exceptional craftsmanship and aristocratic lineage. Phillips’s success also highlights the resilience of the high-end jewelry auction sector, with 90% of signed jewels selling. The auction house will continue with an online “Geneva Jewels” sale through November 13 and a “New York Jewels Auction” on December 8.