While the new Duchess of Huéscar did not wear a
Tiara at her
wedding to the Heir of the Duke of Alba today, his mother, Matilde de Solís, wore a grand Sapphire and Diamond Necklace, which seems to be a converted Tiara from her family, the Marquises of la Motilla, and was worn by her niece, María del Carmen Moreno from Cova Solís, at her wedding!
UPDATE- The Tiara was also worn as a necklace by Matilde's mother, the Marchioness of la Motilla, at her wedding in 1988!