![Flawless white diamonds to go on sale(1/4)](http://www.ecns.cn/hd/2018/04/08/a622a99f93cd4ee293e71cad43dd7ac5.jpg)
A model poses with two white diamonds, each over 50 carats, at Sotheby's auction house in London, Britain, April 6, 2018. (Photo/Agencies)
A model poses with two white diamonds, each over 50 carats, at Sotheby's auction house in London, Britain, April 6, 2018. (Photo/Agencies)