Empress Maria Feodorovna's sapphire to be auctioned in Geneva A diamond-encrusted stone weighing nearly 198 carats from the collection of the Russian Imperial House of Romanov was estimated at $1.02-2.05 million. The decoration was worn by Maria Feodorovna, the wife of Emperor Alexander III. The sapphire was mounted in the frame by Fabergé, and after the October Revolution it was sold. The jewelry acquired its current appearance - a sapphire on a bracelet - in 2015. The exact date when the stone entered the Romanov collection is unknown.