Last updated at 18:09
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Pictures: Stunning Royal diamonds to go on display

To celebrate 60 years of Queen Elizabeth II being on the throne, this sparkling collection of diamonds will be on display - and we've got a sneak preview!
In the centre of this brooch is an impressive pink diamond - it was found in Tanzania, Africa, and was given to the Queen when she got married in 1947. It was then put into the brooch along with 200 smaller diamonds.
Flower-shaped brooch
And this is the crown Queen Victoria wore for her official Diamond Jubilee picture. It's quite small - just 9cm - but still has over a thousand diamonds in it.
Queen Victoria's small diamond crown
In February 2012 the Queen will become the second sovereign in British history to have reigned for 60 years. This is a picture of the Queen's coronation, the official ceremony to mark the start of her reign.
Queen Elizabeth II and her husband Prince Phillip waving to crowds from the balcony of Buckingham Palace.
Here's an older set - the coronation necklace and earrings made for Queen Victoria. It was also worn by Queen Elizabeth II at her coronation - the official ceremony which marked the start of her reign.
Diamond necklace and earrings
It's not just jewellery on display - this box made for a European king has a staggering 3,000 diamonds on it!
Small box decorated with diamonds
This stunning brooch was another creation for Queen Victoria - she's the only other monarch to celebrate a Diamond Jubilee - 60 years on the throne.
Flower shaped brooch
Check out these diamonds! To celebrate 60 years of Queen Elizabeth II being on the throne, this sparkling collection will be on display - and we've got a sneak preview!
Diamond encrusted tiara
This summer at Buckingham Palace, diamonds used and worn by British monarchs over the last 200 years will be on show - just like this necklace, given to the Queen on her 21st birthday in 1947.
Diamond necklace