Naseeb Abdul Juma (born 2 October 1989), popularly known by his stage name Diamond Platnumz (or simply Diamond), is a Bongo Flava recording artist and singer from Tanzania. He is best known for his hit song "Number One". Diamond has won numerous awards at Channel O and the HiPipo Music Awards. He performed at the Big Brother Africa 7 eviction show in May 2012. Diamond is considered influential among his fans, and is said to be the most loved and decorated Tanzanian artist at the moment. He was believed to be the highest selling Tanzanian artist of ringtones by mobile phone companies in 2013, as well as being among the artists earning the highest income in the African Great Lakes region's music industry,
Diamond is a Muslim. In 2010, he endorsed Tanzania's dominant ruling party, the Chama Cha Mapinduzi (CCM) and its presidential candidate, Jakaya Kikwete. He also recorded a remix of his single Mbagala, titled CCM Tusonge Mbele (CCM Let's Move Forward). 0n 6/08/2015 he announced through Instagram that him and Zarinah Hassan who is also known as Zarithebosslady [Ugandan] had welcomed their first child (baby girl) whom they named Lattiffah.