Worn by the Queen Elizabeth the Queen Mother mostly in her earlier years, this Art Deco brooch contains multiple cuts of aquamarine jewels with diamond accents. The brooch is very much in the style of Cartier jewels from the time, though the maker is unconfirmed. Queen Elizabeth did commission other pieces from Cartier. The design seems a double-clip style, though there is no evidence to suggest that it can be separated as such.