The Eternal Pink Diamond, which weighs 2.1 grams, should be compared to “ultimate masterpieces of art – far rarer than a Magritte or a Warhol," Bruning said in the press release.

Combined with its exceptional clarity, it is not surprising that it would command the highest per-carat pre-sale estimate for any diamond to date,” Quig Bruning, head of Sotheby’s Jewelry ...

“It checks all of the boxes you want to see checked when you’re talking about diamonds,” says Quig Bruning, head of Sotheby’s Jewels Americas and EMEA. “It’s just so charming. … ...

"This color is the most beautiful and concentrated shade of pink in diamonds that I have ever seen," said Quig Bruning, Head of Jewelry, according to Sotheby's Instagram page.

“Just a handful of diamonds over 100 carats have ever been offered at auction,” says Quig Bruning, head of jewelry for Sotheby’s Americas. “The fact that we have two in one sale is rare ...