Empress Catherine the Second was known for her love of jewelry and was considered one of the largest collectors of the era. A special place in her collection was occupied by an exquisite ring by the great master Benvenuto Cellini, decorated with a large sapphire and diamonds. According to legend, this ring had unusual properties and brought its owner good luck in all endeavors. St. Petersburg resident Ekaterina Kovalenko knew a lot about jewelry and even had several diamonds of her own, but a gift from an eccentric elderly lady whom she met on vacation in the Canary Islands delighted and puzzled her at the same time. A new friend claimed that Katya was now the owner of Catherine the Great’s own ring and had a great future ahead of her. Katya didn’t believe the crazy old woman, but from that moment her life changed dramatically... Previously, the book was published under the title “The Ring of Catherine the Great”