The Arco Valley Pearl dates back to the 11th century and is said to have been owned by several emperors.
The Arco Valley Pearl is a natural saltwater baroque pearl weighing 575 carats. The pearl dates back to the 11th century and is said to have been once owned by Marco Polo and Genghis Khan. After Marco Polo's death in 1324, the pearl's ownership remains unclear; however, it is known to have remained in Europe. The pearl was eventually passed to an Austrian aristocratic family, the Arco Valleys, from which the pearl receives it's name.
The Arco Valley Pearl is a white blister pearl with shimmering shades of blue and pink. It is the second largest natural pearl in the world, next to the Pearl of Allah. Holes in the pearl suggest it was once mounted in a tiara or crown.
Until 2007 when the pearl appeared in an Abu Dhabi auction, the Arco Valley Pearl was unseen for many years. The whereabouts of the pearl, valued at $8 million, are currently unknown; though, it is believed to be somewhere in Europe.