Complex sentence: The most valuable of these objects was the Tudor State Crown, valued at £1,100 (£2,740,000 in 2011); it was set with 28 diamonds, 19 sapphires, 37 rubies and 168 pearls.
Split into simpler sentences: The most valuable of these objects was the Tudor State Crown, valued at £1,100 (£as of). It was set with 19 sapphires, 28 diamonds, 37 rubies and 168 pearls.