The Bourbon Parme Tiara: Created in 1919 by Joseph Chaumet of diamonds set in platinum.
The Poltimore tiara, worn by Princess Margaret, on her wedding to Anthony Armstrong-Jones.
MIKIMOTO Diamond Tiara, , Japan
The front portion of the King George IV diamond diadem. It was commissioned by that King of Great Britain to wear as a circlet over his Cap of Maintenance upon his arrival at Westminster Abbey for his Coronation in 1821. It has never been worn by a King of Great Britain since, but has been worn by every Queen of Great Britain since - including Her Majesty Queen Elizabeth II who wears it more than any other single piece in her collection