The Russian imperial court jeweler Bolin made a tiara for the newly titled Grand Duchess, which consisted of a complicated pattern of diamonds and pearls, and Marie wore the style on various occasions
But after the Russian Revolution struck in 1917, Marie fled the Vladimir Palace, leaving her tiara and other jewels behind.
A British officer later crept into the palace in disguise, and took the jewels safely out of Russia over to London.
Grand Duchess Vladimir’s son, Grand Duke Boris, was living in London in exile at the time.
source: express.co.uk