A model holds a 18.18 carat pink diamond called "Fortune Pink" during a preview at Christie's before the auction sale in Geneva, Switzerland, Nov 2, 2022. (DENIS BALIBOUSE / REUTERS)

GENEVA - The largest pear-shaped fancy vivid pink diamond ever put up for auction sold for 28.4 million Swiss francs ($28.8 million) at a Christie's sale of rare jewels on Tuesday, the auctioneer said.

The Fortune Pink Diamond - which weighs 18.18 carats, which Christie's had called a fortuitous number for Asian collectors - had been estimated to go for $25 million to $35 million.

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The largest vivid pink diamond sold at Christie's was the 18.96-carat Winston Pink Legacy, which got $50.4 million in 2018, a world record price per carat for a pink diamond sold at auction.