Naseeb Abdul Juma Issack (born October 2, 1989), professionally known as Diamond Platnumz, is a Tanzanian bongo flava recording artist, dancer, philanthropist and businessman.

[3] After signing a record deal with Universal Music in 2017, Platnumz released his third studio album, A Boy from Tandale (2018).

In 2021, Diamond together with his record label WCB Wasafi[4] entered into a 360 Partnership with Warner Music Group.

[27] As of 2019 Diamond was dating Kenyan model and musician Tanasha Donna, with whom he fathered one son, born in October 2019.

[30] In 2010, he endorsed Tanzania's dominant ruling party, the Chama Cha Mapinduzi (CCM) and its presidential candidate, Jakaya Mrisho Kikwete.

[33] Diamond has also been said and in various occasions confirmed that he is dating fellow WCB Wasafi label mate, Zuchu.

[34] On 23 January 2019, Diamond Platnumz was officially introduced as Pepsi Brand Ambassador in East Africa.

[38] On 11 December 2021 he launched Wasafibet[39] in partnership with Odibets-a Kenyan Sports betting company.