Milan closed its autumn season with a quiet surprise. Sotheby’s Fine Jewellery and Watches sale, which ended on October 28, 2026, brought in €6.9 million (about $7.7 million) across more than 280 lots, and several jewels sold for multiples of their high estimates, Rapaport reported on October 29. The top lot was a ring set with a 9.09-carat brilliant-cut diamond, which sold for €307,200, more than twice its high estimate.
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At a glance
- Sale: Sotheby’s Fine Jewellery and Watches, Milan, closed October 28, 2026, with more than 280 lots.
- Total: €6.9 million, about $7.7 million.
- Top lot: a 9.09-carat brilliant-cut diamond ring at €307,200, against a high estimate of €150,000.
- Standout: a Cartier emerald necklace with elephant motifs at €256,000, more than four times its high estimate.
- Why it matters: strong bidding for well-documented stones and signed jewels, just ahead of Geneva’s November sales.
What sold best at Sotheby’s Milan jewelry auction?
The headline lot was the simplest: a ring centered on a 9.09-carat brilliant-cut diamond. It sold for €307,200 (about $341,900), against a high estimate of €150,000. Rapaport did not publish the stone’s color or clarity, which are the details that usually explain a price like this, so the catalogue’s grading notes are worth reading for anyone tracking large-diamond prices this season.
Close behind came a ring with a cushion-shaped Kashmir sapphire of 6.40 carats in a diamond surround. Estimated at €60,000 to €100,000, it sold for €281,600 (about $313,400), nearly three times its high estimate. A Cartier necklace centered on an emerald cabochon, with graduated elephant motifs each set with a circular-cut emerald eye, sold for €256,000 (about $285,000) against an estimate of €40,000 to €60,000.
Two lots tied at €217,600 (about $242,200). One was the 1965 ribbon necklace that led the sale’s preview, set with about 35 carats of oval violetish-blue sapphires and about 55 carats of brilliant-cut diamonds, which landed within its €200,000 to €300,000 estimate. The other was a pair of earrings claw-set with brilliant-cut diamonds of 5.51 and 5.78 carats, estimated at €95,000 to €140,000. Rapaport also noted pieces by Bulgari, Cartier and Buccellati among the lots sold.
Why did the Kashmir sapphire nearly triple its estimate?
In our view, the word “Kashmir” did most of the work. A 6.40-carat sapphire from most sources would be a fine ring; from Kashmir, with a laboratory report to confirm it, it becomes one of the rarest colored stones a collector can buy. Bidders appear to have valued that origin well above the cautious estimate, a pattern seen repeatedly at auction when a Kashmir stone of good size and color comes to market.
The history explains the premium. Sapphires were found high in the Zanskar range of the Himalaya in the early 1880s, and the most productive deposits were worked for only a few years before output dwindled. The finest stones show a soft, velvety blue that gemologists link to fine inclusions scattering light inside the crystal. Because so little new material has surfaced since, nearly every Kashmir sapphire on the market today is a stone returning from an earlier collection. Our guide to ruby, emerald and sapphire prices covers how origin and treatment shape value.
What is the history behind Cartier’s animal jewels?
Animals have been part of Cartier’s vocabulary for more than a century, and the house’s naturalistic jewels flourished under Jeanne Toussaint, who directed its fine jewelry from 1933. Elephants, birds and other creatures appeared in brooches, clips and necklaces, often with gemstone eyes that bring a small figure to life. The necklace sold in Milan, with its emerald cabochon center and graduated elephants, belongs to that tradition of playful, figurative design.
Signed animal pieces from the major houses tend to draw competition well beyond their material value, because collectors are buying a design lineage as much as gold and stones. A result above four times the high estimate suggests several bidders wanted this one, though the report does not give its date or other details.
Milan rewarded what collectors always reward: a rare origin, a signature and a stone that needs no explanation.
What do the Milan results say about Geneva in November?
Milan is a European warm-up for Geneva, where the most important stones of the year come to the block in November. When we previewed this sale in our story on the 1965 sapphire ribbon necklace, the necklace was the headline. In the end, the stronger competition gathered around a large white diamond, a Kashmir sapphire and a signed Cartier piece, while the necklace sold comfortably within range.
That echoes October’s other European sales, where colored stones and signed jewels led the bidding, as in Sotheby’s Paris jewelry results. Geneva will test the same appetite at a far higher level, with Sotheby’s bringing an 8.63-carat pink diamond to its November jewels sale there.
For the Collector
- Prices achieved: €307,200 for the 9.09-carat diamond ring, €281,600 for the Kashmir sapphire ring and €256,000 for the Cartier necklace, per Rapaport. Dollar figures are approximate at the time of writing; check the final results on the Sotheby’s sale page.
- Estimates versus results: auction houses generally publish results with the buyer’s premium included, while estimates exclude it, so part of any gap is the premium itself. Confirm current premium rates with Sotheby’s before bidding.
- What drives value: for colored stones, the origin and treatment stated on an independent laboratory report; for white diamonds, color, clarity and cut grades; for signed pieces, the maker’s signature and any archive documentation.
- What to watch for: regional sales such as Milan can offer good stones at estimates below Geneva’s, but strong results like these show estimates are a starting point, not a ceiling. Set a firm limit that includes the premium.
- Resale: past auction prices do not predict future value. Buy the piece you would be glad to wear.
Frequently asked questions
How much did Sotheby’s Milan jewelry auction make?
The October 28, 2026 Fine Jewellery and Watches sale totaled €6.9 million, about $7.7 million, across more than 280 lots, according to Rapaport.
What was the top lot?
A ring with a 9.09-carat brilliant-cut diamond, which sold for €307,200, more than double its €150,000 high estimate.
How much did the Kashmir sapphire ring sell for?
The 6.40-carat Kashmir sapphire ring sold for €281,600, about $313,400, against an estimate of €60,000 to €100,000.
Did the 1965 sapphire ribbon necklace sell?
Yes. It sold for €217,600, within its estimate of €200,000 to €300,000.
Sources: Rapaport News, October 29, 2026 · Sotheby’s, Fine Jewellery and Watches, Milan
