3. State Diadem of George IV
Wearer: Elizabeth II, the Queen
Since 1821, the owner
Value Estimate: $600,000
The George IV State Diadem is one of those items that simply gets better with age. The amazing headdress was custom-made for King George IV’s coronation in 1821. More than 1,333 diamonds are put into the diadem’s base, which is encircled by two strings of pearls. As such, it weighs a ton.

George IV State Diadem Pinterest / @Kristi King / @Christian Orlov / Queen Elizabeth II
It was handed down through the centuries and ended up on Queen Elizabeth II’s head at her coronation. Even though Her Majesty would rather not wear it the other 364 days of the year, Liz still makes use of it when she dusts it off for the yearly State Opening of Parliament.
