Sotheby's Asia

A rare pink diamond has sold in Hong Kong for nearly $58 million, setting a record for price per carat paid at auction for any diamond or gemstone, according to Sotheby's.

The 11.15-carat Williamson Pink Star on Oct. 7 fetched HK$453.2 million ($57.7 million), the second-highest price paid at auction for any jewel, Sotheby's added.

A rare pear-shaped diamond that is expected to fetch up to $15 million can be bought at auction next month using cryptocurrencies, Sotheby's announced on June 21.

From Keith Haring and Basquiat to Banksy and Invader, Sotheby's new exhibition of street art legends in Hong Kong, launched on March 18, taps into a growing appetite among young Asian collectors.