During Sotheby’s Hong Kong auction on October 7th, the ‘Williamson Pink Star’ Diamond, a 11.15-carat fancy vivid pink diamond, was sold for  453.2 million Hong Kong dollars ($57.7 million). The value paid by a collector in Boca Raton, Florida  for the pink  internally flawless diamond was well above the $21 million pre-sale estimate. 

The price per carat was around $5.2 million, setting a new record price per carat for any diamond or gemstone ever auctioned. 

The buyer has renamed the stone “The Rosenberg Williamson Pink Star.” 

Picture courtesy: Sotheby’s