100-carat diamond sells for $22M at Sotheby's

A "perfect" 100-carat diamond in a classic emerald-cut has sold for just over $22 million at auction.

The internally flawless D color stone is the only classic emerald-cut white diamond of the highest color and clarity and over 100 carats to come to auction, according to Sotheby's.

The final price on Tuesday night was $22,090,000 US ($27,052,000 Cdn)including the buyer's premium.

The diamond was mined in southern Africa within the last 10 years and weighed over 200 carats before it was cut and polished, the auction house said.

The presale estimate had been between $19 million and $25 million.

The record for any jewel is $46 million for a 24.78-carat emerald-cut pink diamond, set at Sotheby's in 2010.