The Crown Jewels are the most complete collection of royal regalia in the world
William & Daniel Downey (active 1860-early 1900s)
King George V and Queen Mary dressed for their first State Opening of Parliament 6 Feb 1911
RCIN 2926154
In this photograph, Queen Mary wears the four largest Cullinan diamonds. I and II are on her Garter riband and III and IV are suspended from the Coronation Necklace. The king and queen are dressed for their first State Opening of Parliament.