The Queen has been wearing a lot of new broaches in the last year. She had a couple new ones when she visited Canada last year.
And I noticed this one on her trip to Singapore.
www.theroyalforums.com/forums/attachment.php?attachmentid=233347&d=1142675741
I've never seen it before. She also wore a new one to Australia that looked to be amethyst, but no picture provided a closeup of the broach.