Queen Elizabeth's jewelry collection is among the most impressive ... and diamond piece for her and Philip's official platinum anniversary portrait. The Prince Albert Brooch carries a legacy ...

Kate Middleton debuted a new diamond brooch ... Getty Images/Karwai Tang/WireImage Though these pieces have created impact when dressing for public engagements, perhaps Kate's most important ...

The main part is the one you’ll see most often, the top hexagonal amethyst surrounded by diamond ... Getty Images) The Braemar Royal Highland Society gave this eagle’s feather brooch ...