197.80-carat Romanov sapphire leads Sotheby's Geneva royal sale
Sotheby's Royal and Noble Jewels sale closes on 11 November, led by the sapphire mounted by Cartier. JCK reports an estimate of CHF 850,000 to 1.7 million; the house's sale page prints none.
By Carat Capital
What changed
A Romanov stone leads Geneva. Sotheby's says a 197.80-carat Romanov sapphire mounted by Cartier leads its Royal and Noble Jewels sale in Geneva. The sale closes on 11 November.
What it means
- If you buy historic jewels: JCK puts the estimate at CHF 850,000 to 1.7 million. Sotheby's sale page prints no estimate.
- If you consign provenance pieces: Sotheby's says the last three editions of this sale achieved white glove status.
- What this is not: A result. Prices are known only after the sale closes.
Key figures
| Romanov sapphirehouse page; mounted by Cartier | 197.80 ct |
|---|---|
| Estimate, as JCK reportsCHF 850,000–1,700,000not printed on the house page | |
| Sale closesGeneva; sale opened 28 October | 11 November |
Source: Sotheby's sale page, Royal and Noble Jewels, Geneva, read 7 November 2026; estimates as reported by JCK, 4 November 2026.
The sapphire's Romanov history.
Worn in 1903. JCK reports the stone was worn by the Dowager Empress Maria Feodorovna at the Winter Palace Ball of 1903.
Dispersed after the revolution. It was documented among the Russian crown jewels before the Soviet government dispersed them, JCK says. The opera singer Ganna Walska later owned it.
Cartier reset it. Cartier, which acquired the stone, made its current bracelet setting in 2015, according to JCK.
| Lot | Detail | Estimate, CHF |
|---|---|---|
| Romanov sapphire, Cartier bracelet setting | 197.8 carats | estimated 850,000–1,700,000 |
| Devonshire opal and diamond tiara, Cartier London | late 1930s | estimated 780,000–1,100,000 |
| Lady Walston toi et moi ring | 7.83-carat sapphire, 6.77-carat emerald | estimated 350,000–500,000 |
| Queen Amélie of Portugal, two emerald and diamond jewels | each | estimated 70,000–100,000 |
JCK gives the sapphire as 197.8 carats; Sotheby's page gives 197.80. Sotheby's sale page prints none of these estimates.
A coronation tiara follows.
Worn in 1953. An opal and diamond tiara made by Cartier in the 1930s for Mary Cavendish, Duchess of Devonshire, was worn at the 1953 coronation, Sotheby's says.
Tiara estimate reported. JCK reports Sotheby's estimate for the tiara at CHF 780,000 to 1.1 million.
Nearly 80 lots close together.
Lots with royal provenance. JCK counts nearly 80 lots, with pieces linked to the Romanovs and to the Houses of Orléans and Braganza.
Viewing in Geneva. The sale opened on 28 October and closes on 11 November. Highlights are on view at the Mandarin Oriental, Geneva, from 6 to 10 November.
What to watch
- 11 November 2026The sale closes. The test: the sapphire against JCK's reported CHF 850,000 low estimate.
- After 11 November 2026Sotheby's results. The test: whether the sale keeps the white glove status of its last three editions.
The story so far
Go deeper
What would change this call
An unsold sapphire, or one sold below CHF 850,000, would say this provenance is priced below JCK's reported range. A price above CHF 1.7 million would say the opposite.
Where the estimates come from
Sotheby's sale page names the sapphire, its weight and the tiara, and prints no estimate. Every estimate on this page is as JCK reported it on 4 November.
Method
Sotheby's sale page for Royal and Noble Jewels, sale code GE2609, read 7 November 2026 (748,936 bytes): 'The Royal and Noble Jewels sale this November will feature many outstanding historical pieces, led by the 197.80 carat Romanov sapphire mounted by Cartier and an exceptional, transformable opal and diamond tiara created by Cartier in the 1930s for Mary Cavendish, Duchess of Devonshire, worn at the coronation of Queen Elizabeth II in 1953'; sale dates '28 October - 11 November 2026 • Geneva'; 'have for the last three consecutive editions achieved white glove status'; viewing 'Mandarin Oriental, Geneva 6–10 November'. The figure 850,000 does not appear in that page's 748,936 bytes, fetched 06:04 EST 7 November. JCK, '197-Ct. Romanov Sapphire Leads Sotheby's Royal Jewels Auction', JCK News Desk, 4 November 2026 (112,913 bytes): 'The Romanov Sapphire is estimated at 850,000–1,700,000 Swiss francs'; 'Sotheby's estimates it at 780,000–1,100,000 Swiss francs' for the Devonshire piece; 'The nearly 80-lot sale'; the 1903 ball, the Soviet dispersal, Ganna Walska and the 2015 Cartier setting. JCK also reports laboratory findings on the stone's origin and treatment; this page does not carry them. JCK's dollar conversions are not used.