HONG KONG, HONG KONG - NOVEMBER 28: Christie's auctioneer Rahul Kadakia takes bids at the auction of the Pink Promise 14.93 fancy vivid pink/VVS1 diamond ring during the Christie's Hong Kong Autumn Auctions on November 28, 2017 in Hong Kong. The Pink Promise, a 14.93 carats fancy vivid pink VVS1 clarity (type IIA) diamond ring, is sold for 28 million USD at the auction.
(Photo by Keith Tsuji/Getty Images for Stephen Silver)
Christie's auctioneer Rahul Kadakia takes bids at the auction of the Pink Promise in Hong Kong. Keith Tsuji/Getty

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