Cygnet Bay Mother of all Pearls

Cygnet Bay Mother of all Pearls

At 22.24 millimetres in diameter, this is the world's largest fine quality round pearl.

It was grown on the Cygnet Bay Pearl Farm north of Broome in Western Australia, and has spent the last few years being showcased around the world.

James Brown is the farm manager at Cygnet Bay, and says the world-wide tour gave competitors a chance to dispute the claim... but no one did.

"You can't really state you've got the biggest in the world until you've had it tested by all of your other competitors," he said.

"So it's spent the last few years travelling to all of the world trade fairs, where the who's who of the international jewellery scene had a look at it, and it was uncontested and everyone admitted that they did not have an equal.

"There are obviously bigger pearls, but they're not as fine quality, or they're not perfectly round and so on... this one certainly seems to be the most valuable pearl in the world."

The monster pearl is now back in Broome, where Mr Brown says people are welcome to look, but it's definitely not for sale.

See photo of Cygnet Baby Mother of all Pearls