An extremely rare 100-carat emerald cut diamond is heading to the auction block in April.
Sotheby's Auction House said it could fetch between $19 million and $25 million.
The diamond's current owner, who remains anonymous, spent over a year studying, cutting and polishing a rough 200-carat diamond to deliver the perfect stone.
"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. It is the first true emerald-cut diamond over 100 carats to be offered at auction—the most classic of cuts, quietly elegant and very contemporary," said Gary Schuler, head of Sotheby's Jewelry Department in New York, in a press release.
The diamond will be exhibited in Dubai, Los Angeles, Hong Kong, London and Doha before returning to New York City on April 17. It is set to be auctioned off on April 21.