Queen Mary’s Girls of Great Britain and Ireland Tiara is perhaps most memorable for featuring in the Queen’s portrait on stamps and banknotes.

Nilesh Rakholia, Director at ABELINI Jewellery, told Express.co.uk: “Recognised as the Queen’s favourite tiara, most people will notice her wearing it on the £5, £10, £20 and £50 notes.

“Featuring beautiful festoon and fleur-de-lis designs, and set in silver and gold, the tiara was originally topped with pearls, however, it has since changed to 13 brilliant-cut diamonds – perfectly fitting for a Queen.”

As the Girls of Great Britain and Ireland Tiara has incredible sentimental value for the Royal Family, the Queen is likely to never part with the piece.