The fifth crowned portrait of HM Queen Elizabeth II facing right, wearing the George IV State Diadem and drop earrings.

The George IV State Diadem, officially the Diamond Diadem, is a type of crown that was made in 1820 for King George IV. The diadem is worn by queens and queens consort in procession to coronations and State Openings of Parliament. The piece of jewellery has been featured in paintings and on stamps and currency. It can be seen in the Queen's Gallery at Buckingham Palace.

ELIZABETH II DEI GRATIA REGINA FIDEI DEFENSATRIX means Elizabeth II, by the grace of God, Queen and Defender of the Faith.

Engraver: Jody Clark

The letter J represents Jubilee.

A Royal Jubilee party brings the nation together, there’ll be dancing in the street, whatever the weather.

Queen Elizabeth II, the longest reigning monarch, and Queen Victoria are the only two reigning British monarchs to have celebrated their Diamond Jubilee (60 years on the throne). Both with extensive celebrations.

Over 2million people took part in street parties to mark Queen Elizabeth’s Diamond Jubilee in June 2012. The occasion was marked with an array of celebrations over the weekend, including the Thames Diamond Jubilee Pageant, a maritime flotilla of some 1000 boats and vessels led by the Queen’s Royal Barge, ‘Gloriana’ and a Diamond Jubilee concert outside Buckingham Palace.