The Queen, accompanied by the Duke of Edinburgh and other members of the Royal Family, officially opened the London Olympic Games.
I think this is the rule: you agree to "parachute" out of helicopter, you can wear as many diamonds as you like. Yup. Sounds right to me.
Diamond Earrings, looks to be Queen Mary's Diamond Cluster Earrings
Diamond Collet Necklace
Photo:PA/BBC

