A Royal Tribute Plate The Queen’s Diamond Anniversary – Her Majesty The Queen and His Royal Highness the Duke of Edinburgh calebrated their 60th anniversary on November 20th, 2007. The special anniversary event was held in Westminster Abbey, the same place where they were married in 1947. Queen Elizabeth II and Prince Phillip are the first monarchs to ever celebrate a diamond anniversary. Royal Doulton celebrates this occasion with a special commemorative plate designed by Neil Faulkner. This plate is hand decorated by the artists in Stoke-on-Trent, England.