Auctions

A Sotheby's  employee  holds Lesedi La Rona Diamond on May Tuesday  3, 2016 in New York City. The diamond the size of a tennis ball that is the largest discovered in more than a century could sell at auction for more than $70 million. Sotheby's says it will offer the Lesedi la Rona diamond in London on June 29

Pascal Perich

A Sotheby’s employee holds the Lesedi La Rona Diamond in New York City. The diamond the size of a tennis ball that is the largest discovered in more than a century could sell at auction for more than $70 million. Sotheby’s says it will offer the Lesedi la Rona diamond in London on June 29 

Gallery technicians at Sotheby's Bond Street get ready to exhibit five Monet's with a value in excess of  70 million which are coming up for auction.

Rosie Hallam/FT

Gallery technicians at Sotheby’s Bond Street get ready to exhibit five Monet’s with a value in excess of 70 million prior to being auctioned.

Sotheby's employees hang up the paintings 'A View of the Grand Canal and Rialto Bridge', left, and 'A View of the Piazza San Marco looking East towards the Basilica' by Canaletto on display at the auction house in London. The paintings are to be auctioned as a pair in 'Old Master and British Paintings' sale on Dec. 4 with an estimated price of 8 to 12 million pounds (US$12.44 to 18.66 million or 9.3 to 13.94 million euro).

Sang Tan/AP

Sotheby’s employees hang the paintings ‘A View of the Grand Canal and Rialto Bridge’, left, and ‘A View of the Piazza San Marco looking East towards the Basilica’ by Canaletto at the auction house in London. The paintings are to be auctioned as a pair in the Old Master and British Paintings sale on December 4, with an estimated price of £8m to £12m.