Kate Middleton: Duchess’ most expensive piece of jewellery at £60m & who gifted it to her

So which items are worth the most amount of money, and what is their history? 

Nizam of Hyderabad necklace – £60million 

The Queen’s Nizam of Hyderabad necklace is said to be one of the most expensive pieces of jewellery in the Royal Family’s collection. 

Experts said: “This is by far one of the most precious pieces of jewellery from the British royal family. 

“The necklace, which was made by Cartier in 1935, is extremely intricate featuring over 50 diamonds nestled in an abstract floral design.  

“With an array of enormous pavé set stones and a detachable double-drop pendant, the necklace features 13 emerald and pear-shaped diamonds linked to a chain of a further 38 brilliant-cut stones. A piece like this is truly one of a kind.  

“This unique necklace is likely to be worth around £65million to £70million making it one of the most valuable royal family pieces we’ve seen.  

“The necklace was a wedding gift to Princess Elizabeth from the Nizam of Hyderabad, who was known at the time as one of the wealthiest people in the world. 

“It is believed that the Nizam of Hyderabad requested Cartier allow Queen Elizabeth II to choose anything she fancied from their impressive collection of jewels. 

“The Queen opted for a tiara with three detachable flower brooches and what we now know as the Nizam of Hyderabad Necklace,” they added.