A convertible aquamarine and diamond tiara, made by in 1930 in the Art Deco style by Lacloche Brothers, is displayed at Christie’s ahead of its sale in November 2002; the piece, which can be transformed into a necklace, tiara, or brooch, fetched more than 27,000 pounds at auction

A belle epoque diamond and aquamarine tiara from the estate of Christian, Lady Hesketh is displayed at Sotheby’s ahead of its sale, May 2007; the tiara, which was made around 1910, fetched more than $98,000 at auction