Check out this empress' 190-carat Orlov Diamond at Russia's Armory Museum
The 
collection is documented in Russia's Treasure of Diamonds and ... set with the 
approximately 190 carat (ct) Orlov diamond, the Imperial Globe... [DOC] [TLE] Jewels of the Romanoffs  Pala international - Palagems [PAR] In the midst of the heap appeared to glimmer the Orloff diamond [].