More than ten thousand diamonds will be on display at Buckingham Palace this year during it's annual summer opening.
They're set into works acquired by British monarchs over the course of three centuries.
Among the works in the exhibition is the Delhi Durbar Tiara, which is on display to the public for the first time.
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A lamp in the tower which houses Big Ben is to be switched off for the first time in more than 70 years.
Sir Bruce entertained audiences for more than seven decades.
Work in the tower will also pause over the bank holiday weekend.