It looks like the tiara of Irene, duchess of Aosta. That brings the question if Irene (who died in 1974) herself did not need the tiara? Or did she wear one of the Aosta's?
Queen Anne did wear a saphire tiara at another event so she did have another option, if it wasn't a loan.
--Previous Message-- : The event is the wedding of Princess Sofia and : Juan Carlos,Athens 14 May 1962.I do not : really understand what tiara Queen Anna is : wearing,but is looking like Princess Irene : of Aosta tiara. Knowing that Queen Mother : Hellen also participate at the wedding ( you : can see in some pictures from the : pre-wedding ball)and because there was one : tiara in romanian RF, I think it was a : probleme. : But what was Princess Irene wearing then? : : : : Quuen Mother Hellen : : : : : : : :