From the Romanov era, period of Tsar Nicholas II, this deep pink rhodochrosite egg enhanced with overlapping gold bands each terminating in a bead set rose-cut diamond was made by the leading Russian court jeweler, Friedrich Köchli (1837-1906). With gold suspension ring.
By Köchli, St. Petersburg, circa 1900, the ring stamped with maker’s initials F K and 56, the Russian gold standard for 14k with the assaymaster’s mark.
1 in. (2.5 cm) long including outer suspension ring; egg alone measures 5/8 in. (1.6 cm) long; 3/8 in. (1 cm) wide. Chain not included.