A Diamond Jubilee portrait of the Queen was unveiled at the National Portrait Gallery in Canberra, Australia. The portrait by Australian artist Ralph Heimans is entitled "The Coronation Theatre, Westminster Abbey: A Portrait of Her Majesty Queen Elizabeth II".
(And, since we are a jewel blog, I must note that he's managed to bring a tremendous amount of light to the diamonds, which is no easy feat.)
I like the above video as it gives you a sense of the scale of the work; click here for an article with more information on the painting and click here to see it close up at the artist's site.