The jewelry (R) made of "Lesotho Promise" diamond and a brut diamond (L) are seen in the Diamond Museum of Antwerp, in Belgium, May 4, 2018. The Antwerp Diamond Museum was closed in 2012 for moving in a new location. It reopened on May 4 to introduce the history and stories on diamonds. Antwerp is known as the "Diamond Capital", with a vast majority of diamonds sold globally pass through the city. (Xinhua/Wang Xiaojun)