A white diamond billed as the largest and purest of its type to come to market is expected to sell for well over $33 million.
Sotheby's auction house says the 102.34-carat gem mined from Botswana "is the only known round brilliant-cut diamond over 100 carats perfect according to every critical criterion" — carats, color, clarity and cut.
Sotheby's diamond department head Patti Wong called it "over 100 carats of flawless perfection."
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The diamond went on display Thursday at Sotheby's London showroom and is being offered for private sale. It's expected to fetch a price "considerably higher" than the $33.7 million auction record for a white diamond.
The auction record for any diamond is held by the "Pink Star," which sold for $71 million at Sotheby's Hong Kong in 2017.