The Cambridge Pearl Pendant Brooch. Originally belonged to Princess Augusta, Duchess of Cambridge, inherited by Princess Mary Adelaide, Duchess of Teck, and then by Queen Mary. The Queen inherited it in
Marie Poutine's Jewels & Royals: Russian Imperial Jewels ~ A tiara of huge pear pearls and diamonds, belonging to Empress Alexandra Fedorovna, consort to the last tsar. It was made by court jeweler Bolin.
Romanov jewellery: this is a 136 carat emerald "The Green Queen". Decorated by diamonds. It belonged to Nikolai of Russia and later in to GD Alexandra Iosifovna, wife of Nikolay II relative. Today is kept in the Diamond Fund, Moscow Kremlin.