Cracked medieval jug may sell for US$10 million

An 11th century Egyptian rock crystal jug, one of only six known examples of its kind, may sell for as high as US$10 million at auction.

The Fatamid dynasty artifact was originally thought to be from 19th century France because of its enamel design. Ironically described as "the Holy Grail of Islamic art," the last jug of this sort to go on the open market was purchased by the Victoria & Albert Museum in 1862.