The most valuable tiara was designed by Gianni Versace with an estimated retail value of $5 million (£3.2 million) in 1996. Set in yellow gold and decorated with 100-carat diamonds, the tiara weighed approximately 300 g (10.5 oz).
An 18-carat gold crown set with cut diamonds and surmounted by a 6.9-carat yellow diamond retailed for £250,000 ($414,000) at Harrods, London, UK, in 1998. The tiara was designed by Slim Barrett, whose headwear is worn by celebrities such as Madonna and Sinead OConnor.
Comments below may relate to previous holders of this record.