Brent Shannon and Ethan West found the nuggets near goldmining town Tarnagulla in Victoria.

The men dug up the ground and used metal detectors to detect gold in the area.

"These are definitely one of the most significant finds," Ethan West said.

"To have two large chunks in one day is quite amazing."

They found the nuggets, which have a combined weight of 3.5kg (7.7lb), in a number of hours with the help of Mr West's father.

"I reckoned we were in for a chance," Mr Shannon told Australian TV show Sunrise.

"It was in a bit of virgin ground, which means it's untouched and hasn't been mined."

Mr West said that during four years of mining for gold, he is picked up "probably thousands" of pieces.

Collectors can pay up to 30% more for the nuggets than their estimated value.

In 2019 an Australian man unearthed a 1.4kg (49oz) gold nugget worth an estimated A$100,000 (£54,000; $69,000) using a metal detector.

Gold mining in Australia began in the 1850s, and remains a significant industry in the country.

The town of Tarnagulla itself was founded during the Victoria Gold Rush and became very wealthy for a period of time when keen prospectors moved there to make their fortune, according to a local website.