Sold!

A flawless 102-carat diamond has been purchased for $15.7 million in a Sotheby’s auction. Notably sold without a reserve price, one expert described the transaction as a "bargain" buy.

The rare sparkler, a 102.39-carat D Color Flawless Oval Diamond, was bought by an anonymous telephone bidder through an online auction hosted by Sotheby's in Hong Kong on Monday, BBC reports.

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The luxury auction house said the sale was historic as the “first world-class diamond ever to be auctioned without reserve,” or without a minimum sum set by the seller.

The 102-carat jewel was expected to fetch between $10 million to $30 million; only seven other D Color white diamonds over 100 carats have ever sold at auction.

The 102.39-carat D Color Flawless Oval Diamond. (Sotheby's) 

The 102.39-carat D Color Flawless Oval Diamond. (Sotheby's) 

Tobias Kormind, co-founder of online jeweler 77 Diamonds, argued that the new owner “bagged a bargain” for the gem, as the decision to eschew a reserve price came “back to bite” the seller, Kormind told the BBC.

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Sotheby’s says this diamond was cut from a 271-carat rough and discovered in Ontario, Canada, in 2018, in the Victor Mine. The rough was then cut and polished over a year by diamond specialists Diacore to bring out its brilliance.

Now, the diamond is headed to a private collector in Japan, Sotheby’s wrote on Instagram.

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The auction house said that the buyer has named the precious stone the “Maiko Star” after his second daughter. In April 2019, the same collector purchased an 88.22-carat oval, brilliant diamond for $13.8 million and called it the “Manami Star,” in honor of his eldest daughter.

Fox News’ Jeanette Settembre contributed to this report.