Part of the dutch cut Cullinan diamond HRM is wearing the Imperial State Crown of Great Britain, which incorporates the "Black Prince's Ruby", a 140 ct. The crown was modified for Queen Elizabeth II prior to the 1953 coronation.
Buckingham Palace has shared rare images of the Queen to celebrate her birthday. This undated photo shows then Princess Elizabeth, left, posing with her sister Princess Margaret and their father King George VI in Britain.
Queen Elizabeth II Photos - Queen Elizabeth II arrives at Horseguards Parade during Trooping the Colour at The Royal Horseguards on June 2014 in London, England. - Queen Elizabeth II's Birthday Parade: Trooping The Colour