Cartier 1936 Halo tiara as worn by Kate Middleton at her wedding to Prince William. The tiara was made in Cartier's London workshops and includes almost 800 diamonds.Photo: Cartier archives

Cartier 1936 Halo tiara as worn by Kate Middleton at her wedding to Prince William. The tiara was made in Cartier's London workshops and includes almost 800 diamonds.Photo: Cartier archives

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