Bonhams will auction off what is believed to be the world’s second-largest documented pearl, a five-pound gem found off the coast of the Philippines.

Dubbed the “Palawan Princess,” the gem is next to the 14-pound “Pearl of Allah” in size that was also found off the coastal waters of the Philippines.

The natural non-nacreous pearl was found in saltwater near the Philippines’ Palawan island and “bears an uncanny resemblance to a human brain”.

The approximately 11,339-carat Palawan Princess is a blister pearl measuring six inches in diameter and accompanied by the lower half of its original giant clam shell, which shows the point of attachment where the pearl formed.

The price of this precious gem is estimated to be somewhere between $300,000 and $400,000. It will be auctioned off on December 6.

Source: Nationaljewelernetwork