|The Lotus Flower Tiara|
|The necklace used to make the tiara|
|Queen Elizabeth, the Queen Mother (pictured as Duchess of York)|
|Viscount and Viscountess Linley|
UPDATE: Apparently this did indeed make it back to the main collection - the Duchess of Cambridge wore it for her first public tiara appearance after her wedding, the Diplomatic Reception at Buckingham Palace on December 3, 2013.
Does this own a place in your ultimate tiara collection?
Photos: Geoffrey Munn/Suzy Menkes/Corbis/Getty Images