Two carat diamonds at $2.2m each are worth twice as much as they would have been if they were bought in a market.
In the past decade, diamonds have been valued at more than $10,000 per carat, making them one of the most valuable commodities in the world.
The diamonds, made of a unique mixture of carbon and precious metals, are rare because they are so rare.
However, their price is up by almost 50 per cent since 2000.
The price of diamonds has increased by nearly 50 percent in the past five years, according to the Australian Gem and Mineral Council.
The world’s most expensive diamond is the 1,977 carat ‘Diamond Jubilee’ diamond that was mined by the British company Diamond Jubilee in 1989.
The Diamond Jubilees, who are not allowed to mine in Australia, mined the diamonds for $1.3bn (£900m).
However, the 1.977carat diamond was valued at $937m in 2013, according the Australian government.
That year, the value of the first 2.5 carats of the 1/3 of the diamond, which was sold to a Swiss jeweller for $2,600, was less than $40m.
The diamond is still valued at nearly $2m in 2017, according at the time to a Reuters news agency report.
In a separate interview with the ABC, Mr Klemens said that he wanted to sell the diamonds to make a profit.
“I think there’s been a big opportunity here,” he said.
“The value of diamonds is about $10 million.
You can get a diamond for that much if you are lucky.”
Mr Klemen said the diamonds are sold for about $2 million a piece.
“You’re buying it in a store, you’re selling it in an auction, you can buy it at a dealer, you get it for $10m or less,” he told the ABC.
“That’s pretty much it.
It’s very cheap to get the diamonds.”