George IV Diadem Collectors Edition This diadem was made for the coronation of George IV in 1820, but is better known as the one worn by Queen Victoria and our current Queen Elizabeth II on ceremonial state occasions.
'Diamond' Crown Silver Toned brooch
Although taken from the Cypher of Empress Catherine, we can rename it the ‘diamond crown brooch’ and it would look nice in the Jewel House shop as a non-descript jewelled crown.