Queen's Williamson diamond brooch: Reason why it's valued at £25million

QUEEN ELIZABETH'S Williamson pink diamond brooch is the second most valuable brooch in her collection, and a jewellery expert has explained why.

Queen's nickname for diamond brooch worth over £50 million and who owns it now - Mirror Online

Queen's Williamson diamond brooch: Reason why it's valued at £25million

Queen's Williamson diamond brooch: Reason why it's valued at £25million

Kate Middleton's £66m necklace that she can only wear when the Queen says so - MyLondon

Queen's Williamson diamond brooch: Reason why it's valued at £25million

Platinum Jubilee Jewel Countdown: The Williamson Pink Diamond Brooch

Royal Family: The Queen's massive £25 million brooch with the most valuable diamond in the world - MyLondon

Kate Middleton's £66m necklace that she can only wear when the Queen says so - MyLondon

Queen reportedly changed original use of Williamson brooch's pink diamond