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GARY SCHULER
Ultra-rare pink diamond to go under hammer in Geneva, expected to fetch over $23 mnFive out of the 10 most valuable diamonds ever sold at auction were pink.
Super rare, purple-pink diamond goes under the hammer at Sotheby's, could rake in a whopping $38 mnPink diamonds are both rare and aesthetically highly prized by collectors, analysts say.
'Completely flawless' 102.39-carat diamond fetches US$15.7 mn at auctionOnly seven other white diamonds bigger than 100 carats and of the same quality have ever gone under the hammer.