Lin Luder, Lady Mayoress of London, wears a tiara during the Mexican state visit, March 2009; I don’t have additional information about the tiara’s ownership or provenance

Theresa Lewis, Lady Mayoress of London, wears a bandeau set with diamonds and rubies at the Lord Mayor’s Banquet at the Guildhall, November 2007; I don’t have additional information about the tiara’s ownership or provenance

Carole Blackshaw, Lady Mayoress of London, wears a baroque pearl and diamond tiara during the Russian state visit, June 2003; Lady Mayoresses often borrow tiaras, and this sparkler, which apparently once belonged to a Hanoverian prince, is now the property of the Qatar Museums Authority