Total diamond weight ca 0.80 ct, dimensions 45 X 15 mm, total weight 6 g. Struck with workmaster's initials RS, 56 standard.
W.A. Bolin collection
The Armoury Museum, the Kremlin, 2001 'W.A. BOLIN Bolin in Russia Court jeweller late XIX-early XX centuries', catalogue no 100, p. 165.
In the mid-1840s, one of Bolins and the world's most famous tiaras was possibly crafted under the supervision of master craftsman Robert Schwan, known as the Vladimir Tiara. The tiara is now owned by the British royal family and was often worn by Queen Elizabeth II. It was commissioned in 1843 as a gift for the future Empress Maria Alexandrovna, who later bequeathed it to her son Grand Duke Vladimir, whose wife Grand Duchess Maria Pavlovna frequently wore the beautiful tiara.