Kate Middleton owns the "most precious royal jewellery".

Royal jewelry is an exciting topic for fans, particularly tiaras and engagement rings.

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Royal women also have stunning necklaces that are often overlooked.

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In 2014, Kate Middleton wore the £66.3 million Nizam of Hyderabad necklace.

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The necklace incorporates 13 emerald cut diamonds and is detachable.

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The most affordable piece of royal jewelry is the British Royal Family's amethyst heart necklace, valued at £50,000.

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The amethyst heart necklace was originally owned by the late Queen Mother and now belongs to Queen Camilla.

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Queen Alexandra gave the Queen Mother the diamond, amethyst, and pearl necklace for her wedding.

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