The Crown Jewels are a collection of priceless historical artifacts, including the Sovereign's Sceptre, the Imperial State Crown, and other royal regalia. For security reasons, these items are kept under tight security at the Tower of London and are never lent out for film productions.
The Crown Jewels featured in "The Queen" were replicas created specifically for the film. The filmmakers worked closely with the Royal Collection Trust to ensure the replicas were as accurate as possible.