(IDEX Online) - An historic pearl and diamond tiara from the Spanish royal family sold for $1.6m at Sotheby's Geneva.It was a gift to Maria Vittoria dal Pozzo from her father on her marriage in 1867 to Amedeo of Savoy, Duke of Aosta, who was later elected King of Spain as Amadeo I (1870 until his abdication in 1873). She became Queen Maria Vittoria of Spain and died nine years later, aged just 29.It is believed to have been created by Musy Padre e Figli - court jeweler of Turin, and one of the oldest goldsmiths in Europe.The tiara (pictured) has 11 drop-shaped natural pearls and about 150 to 170 carats of cushion-shaped, circular and single-cut diamonds, on average J-K color, with to yellowish tint, SI-I clarity.The tiara remained in the family's possession until last week's sale in the Magnificent Jewels and Noble Jewels auction. The estimate was $1m to $1.5m.