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
Diamonds on display at De Beers Global Sightholder Sales in Botswana’s capital city, Gaborone. Reuters  

Diamond production regains sparkle as demand picks up