Above: Small imperial crown of Russia. Image via Elena Horvathova on LiveJournal (http://eho-2013.livejournal.com/62382.html). Set entirely in diamonds, the crown is now housed at the Moscow Kremlin as part of the Diamond Fund. There used to be two such crowns in the collection, but one was sold after the Russian revolution. Below: Photograph of Maria Feodorovna, Dowager Empress of Russia, wearing the small imperial crown, 1898. Royal Collection Trust/© Her Majesty Queen Elizabeth II 2016.