And where there is money to be made, there are people - even royal people - that need it, for varying reasons. Enter: the tiara sale.
|Queen Elisabeth of the Belgians and her Cartier Bandeau Tiara|
|Queen Victoria Eugenia of Spain and her Chaumet Spike Tiara|
|The Cambridge Sapphire Tiara, on (left to right) Queen Mary, Princess Marina, and the current Duchess of Kent|
|The new Cambridge Sapphire Tiara|
|Queen Mary's Amethyst Parure|
Our last piece today is not gone, but I'll include it as a bit of a cautionary tale for those that think selling tiaras to other family members is the perfect solution to keeping gems within the royal collection.
|Queen Silvia and the Edward VII Ruby Tiara|
Which sold tiara do you most wish was still in a royal collection?
Photos: Geoffrey Munn/Sotheby's/Corbis