One of few surviving gemstones from Russia's Crown Jewels to be sold

• A rare Ceylon sapphire belonging to Russia's imperial Romanov dynasty is expected to fetch up to £1.5 million at a Sotheby's auction.
• The Romanov Sapphire, worn by Dowager Empress Maria Feodorovna in 1903, is one of the few identifiable surviving gemstones from the Russian Crown Jewels.
• Other notable items in the sale include Cartier's Devonshire black opal tiara, estimated at up to £998,000, and a rare toi et moi ring previously owned by Lady Walston.
• The Devonshire black opal tiara was historically worn at the coronation of Queen Elizabeth II in 1953 and recently by director Emerald Fennell at a film premiere.
• Sotheby's Royal and Noble Jewels live auction will take place at the Mandarin Oriental in Geneva on Wednesday 11 November.

IN FULL

'Rare' sapphire jewel linked to Russia's Romanov dynasty could fetch £1.5m at auction