Kate Middleton's £25,000 ring is a 'sign of independence' – pictures

But for Kate, who has likely owned the ring for years, it is also thought her citrine ring represents “independence”.

Mr Cherry added: “While most jewellery Kate wears is assumed to be from the royal collection, she actually wore this citrine beauty on her 26th birthday, suggesting this is a personal piece.

“Some relate her wearing of the citrine ring to a sign of independence.

“Throughout history, gemstones adopt symbolic meaning – citrine is recognised as a gem of optimism, hope, and happiness.”