Alexandra Michell, gemmologist and jewellery expert from Prestige Pawnbrokers of Channel 4’s Posh Pawn, spoke exclusively to Express.co.uk about Diana’s tiara.

“The piece is hard to value due to the complexity of the make and the large number of diamonds to consider as well as natural pearls which are rare to find in this size and shape.

“However, I would think it could be worth in the region of £2million to 4million.”

Read the full article here: https://www.express.co.uk/life-style/style/1556480/princess-diana-style-cambridge-lovers-knot-tiara-prince-charles-william-pictures-exclusive

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