PHILLIPS’ GENEVA JEWELS AUCTION: IV ACHIEVES CHF 7.6 MILLION / $9 MILLION 100% Sell Through Rate for Art Deco Jewels and Natural Pearls Highlights Global Demand for Period and High-Quality Pieces Geneva, 12 May 2025 Sale Total: CHF 7,578,725 / $8,980,031 / €8,070,584 Lots Sold: 114 | Lots Offered: 143 Sold by Lot: 80% | Sold by Value: 60% Benoît Repellin auctioneering lot 344 for CHF 482,600 during The Geneva Jewels Auction: IV.

Image Credit: Sebastien Maflin GENEVA – 12 MAY 2025 – Phillips concluded The Geneva Jewels Auction: IV on 12 May at its saleroom at the Hôtel Président in Geneva. The event drew over 2,400 visitors during the preview and sale, reflecting significant interest from collectors and enthusiasts. Bidders from over 40 countries took part in the sale via phone, online, and in person, with particularly strong participation from the Middle East .

Natural pearls and Art Deco pieces achieved notable results, with 100% of pieces sold. Signed jewels and exceptional coloured gemstones also attracted competitive bidding and achieved strong prices, underscoring sustained global demand for rare and historic pieces. Benoît Repellin, Phillips’ Worldwide Head of Jewellery, said: “The results of today’s sale reaffirm the enduring appeal of period jewels and the discerning eye of our international clients.

Across the auction, 87% of sold lots exceeded their presale low estimates, with more than half surpassing their high estimates. Demand was particularly strong for Art Deco jewels and natural pearls, both of which achieved 100% sell-through rates. Art Deco pieces totalled CHF 807,720, nearly three times their low estimate, with 93% selling above their high estimates.

Natural pearls performed exceptionally, realising CHF 708,660, or 327% above their low estimate. We also saw continued enthusiasm for signed jewels, with 86% sold and the majority far exceeding their pre-sale estimates. Looking ahead, our Geneva Jewels Online Auction will continue until 15 May, and we look forward to our next live sale in New York, taking place on 12 June.” Top Ten Lots Lot Description Estimate Price Achieved 344 Bulgari, Gold, Light Pink diamond, ruby and diamond wristwatch, 'Serpenti', late 1950s CHF240,000 - 430,000 CHF 482,600 $571,833 €513,921 309 Graff, A 13.42 carat Burmese sapphire and diamond ring CHF245,000 - 350,000 CHF 419,100 $496,592 €446,300 339 Ruby and diamond necklace CHF265,000 - 440,000 CHF 355,600 $421,350 €378,678 277 A 122.77 carat unmounted Paraiba tourmaline CHF335,000 - 530,000 CHF 330,200 $391,254 €351,630 303 A 11.75 carat Paraiba tourmaline and diamond ring CHF150,000 - 220,000 CHF 254,000 $300,965 €270,485 308 A 7.03 carat d iamond pendant, Dcolour, Internally Flawless, Improvable, type IIa CHF195,000 - 265,000 CHF 241,300 $285,916 €256,960 241 Ruby and diamond necklace CHF210,000 - 310,000 CHF 228,600 $270,868 €243,436 288 A 3.93 carat Colombian emerald and diamond ring CHF110,000 - 116,000 CHF 177,800 $210,675 €189,339 221 Retailed by Bulgari, Natural pearl and diamond necklace CHF35,000 - 52,000 CHF 165,100 $195,627 €175,815 306 A 10.23 carat Burmese sapphire and diamond bracelet CHF90,000 - 130,000 CHF 152,400 $180,579 €162,291 Exchange Rate on 12 May 2025: CHF 1 = US$1.1849, €1.0649, £0.8976