The sapphire and diamond cluster-style ring has been copied by jewellers worldwide ... the Girls of Great Britain and Ireland tiara and the Grand Duchess Vladimir tiara set with emerald drops.

A Cartier diamond and turquoise tiara once owned by Nancy Astor, an American-born British politician who became the first woman to take a seat in the House of Commons, is set to be auctioned next week ...

A Cartier turquoise and diamond tiara owned by the first woman to take a seat in the House of Commons is expected to fetch ...