FILE PHOTO: Diamonds are displayed during a visit to the De Beers Global Sightholder Sales (GSS) in the capital Gaborone in Botswana November 24, 2015. REUTERS/Siphiwe Sibeko/File Photo
FILE PHOTO: Diamonds are displayed during a visit to the De Beers Global Sightholder Sales (GSS) in the capital Gaborone in Botswana November 24, 2015. REUTERS/Siphiwe Sibeko/File Photo