Tennis ball-sized 'diamond in the rough' too big to sell
World's Second Largest Diamond Could Bring in $70 Million at Auction
World's largest uncut diamond could fetch NZ$121.9 million at auction this week
Huge diamond fails to dazzle in Sotheby's sale
Huge 1,109-carat diamond, as big as a tennis ball, fails to sell at auction
World's biggest uncut diamond sells for $53m
World's largest diamond found in 100 years goes under the hammer
In pictures: World's largest rough diamond fails to sell at Sotheby's auction - Arabian Business
Diamond From De Beers 'Exceptional Blue' Collection Doesn't Sell
World's second-largest diamond fails to sell at auction