This giant pearl could be the biggest ever found in the world and five times larger than the previous record after being handed in by a fisherman.
The man who has not been identified found the priceless 34kg gem 10 years ago in the sea off the coast of Palawan Island, Philippines.
He didn't know the potential eye-watering value of $100 million and kept it as a 'good luck charm' in his rundown wooden home. But a fire at the property earlier this year forced him to have a clear out and move house.
The fisherman handed it into the stunned local tourism officer in remote Puerto Princesa who verified that it had been found in a giant clam.
The priceless rock measures a staggering 1 foot wide and 2.2 feet long - dwarfing the current world's biggest Pear of Allah which weighed 6.4 kg and is worth $35 million.
Tourism officer Aileen Cynthia Amurao said "The fisherman threw the anchor down and it got stuck on a rock during a storm. He noticed that it was lodged on a shell and swam down to pull up the anchor, and also brought the shell with him. This was a decade ago and he kept it at home. He didn't know how much it was worth and kept it tucked away at home as a simple good luck charm. We were amazed when he brought it to us. We now need help from gemologists to fully certify it. We're waiting for authentication from Gemologist Institute and other international authorities. But we believe Puerto Princessa is likely earning another prestigious title and a record breaker for having the world's biggest natural giant pearl from a giant clam. We will keep this here in the Philippines and hope it will bring more tourists to the city."
The gem was shown off to public today. The current record holder is Pearl of Allah, also known as the Pearl of Lao Tze, which was also found off Palawan, the Philippines in 1934. It is on exhibition at the Ripley's Believe It or Not! in New York.