A Fabergé egg (yaytso Faberzhe) is a jewelled egg created by the jewellery firm House of Fabergé, in Saint Petersburg, Russia. As many as 69 were created, of which 57 survive today. Virtually all were manufactured under the supervision of Peter Carl Fabergé between 1885 and 1917. The most famous are his 52 "Imperial" eggs, 46 of which survive, made for the Russian emperors Alexander III and Nicholas II as Easter gifts for their wives and mothers. Fabergé eggs are worth millions of dollars and have become symbols of opulence. The House of Fabergé was founded by Gustav Fabergé in 1842 in St. Petersburg, Russia. The Fabergé egg was a later addition to the product line by his son, Peter Carl Fabergé. Prior to 1885, Emperor Alexander III gave his wife Empress Maria Feodorovna jeweled Easter eggs. For Easter in 1883, before his coronation, Alexander III and Maria Feodorovna were given eggs, one of which contained a silver dagger and two skulls. The egg came with messages including "Christ is risen" and "You may crush us—but we Nihilists shall rise again!" Before Easter 1885, Alexander III's brother Grand Duke Vladimir Alexandrovich suggested that Peter Carl Fabergé create a jeweled egg. This type of egg is believed to have been inspired by an ivory hen egg made for the Danish Royal Collection in the 18th century. Known as the Hen Egg, it has a 2.5-inch outer enamel shell and a golden band around the middle. The egg opens to reveal a golden "yolk" within, which opened to reveal a golden hen sitting on golden straw. Inside the hen lay a miniature diamond replica of the Imperial crown and a ruby pendant, though these two elements have been lost. It was given to the tsarina on 1 May 1885. The egg cost 4,151 rubles. Six weeks later, the emperor made Fabergé the supplier to the Imperial Court. Maria was so delighted by the gift that Alexander appointed Fabergé a "goldsmith by special appointment to the Imperial Crown" and commissioned another egg the next year.