100 Carat Diamond Auction - At the Magnificent Jewels auction that began at 10 a.m. on Tuesday, an "exceedingly rare" and "perfect" 100-carat diamond in a classic emerald cut was sold for over $22 million.

The 100 Carat Diamond auction sold an internally flawless D color stone which is the only classic emerald-cut white diamond of the highest color and clarity, according to Sotheby's.

The final price at the 100 Carat Diamond auction Tuesday night was $22,090,000. This already includes the buyer's premium.

"This 100.20-carat diamond is the definition of perfection. The color is whiter than white. It is free of any internal imperfections and so transparent that I can only compare it to a pool of icy water," said Sotheby's New York jewelry department head Gary Schuler in a statement before the 100 Carat Diamond auction.

The estimate before the 100 Carat Diamond auction was between $19 million and $25 million, according to Sotheby's catalogue listing.

The spectacular jewel is 100.20 carats in a platinum setting size 6½, reported USA Today.

According to Sotheby's listing, the 100-carat diamond is "exceedingly rare" and a "miracle of nature."

After the100 Carat Diamond auction, the jewel is now considered one of six 100-carat diamonds which has ever been sold at an auction worldwide.

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

The winning bid at the 100 Carat Diamond auction reportedly came in over the phone. Both the seller and buyer wished to remain anonymous, according to the Associated Press.

There are only five "perfect" diamonds over 100 carats which have sold at auction in the last 25 years before the100 Carat Diamond auction Tuesday. In 2013, a 118-carat oval-cut stone got $30.6 million at Sotheby's.