made in 1867 bought by Queen Isabella II of Spain for the Infanta Isabel, Princess of Asturias, on the occasion of her wedding.
The Infanta died childless, and left the diadem to her nephew Alfonso XIII.
His wife Queen Victoria Eugenia used the Mellerio Shell tiara in one public occasion, as only once did her daughter in law, the Countess of Barcelona, wear it.
Queen Victoria-Eugenie of Spain (1887-1969)
Countess of Barcelona - mother of KJC - left is Queen Victoria -Eugenie with Fleur-de-Lys tiara
The tiara was a wedding present from the Count and Countess of Barcelona to Princess Sophia of Greece and Denmark, who was seen with the Shell tiara for the first time in her pre-wedding ball.
a lot of pictures of QSofia wearing this tiara, QS lent the tiara to her SIL, her daughters and her daughter in law, pictured here alsohttp://atthespanishcourt....ss.com//?s=mellerio+tiara