Birthname: Joseph kirkland
Birthdate: June 8th, 1965
Residence: Bronx, NY
Occupation: MC/Producer
Stagename: Diamond D
Affiliations: D.I.T.C, Ultimate Force, The Omen.
Credentials: Stunts Blunts And Hiphop, Hatred Passion & Infidelity, Im Not Playin'.

Diamond D was a member of Ultimate Force, along with Master Rob and together they appeared on the Jazzy Jay album Cold Chillin In the Studio and recently in 2007 released their debut more than 15 years after breaking up, which was named "Im Not Playin" Diamond produced the album, and Master Rob is on the mic. After Ultimate Force split in 1992, he was a founder of the D.I.T.C Crew He is also in the group named the Omen along with Sadat X and Kamari.

Diamond D recorded his first solo album, the underground classic Stunts, Blunts & Hip-Hop (which was released as by Diamond & the Psychotic Neurotics). Although it never sold very many copies, it increased his status, and he worked with Illegal, House of Pain, KRS-One, and the Pharcyde during the mid-'90s. A host of top-flight rappers returned the favor for his sophomore album, Hatred, Passion & Infidelity, including Busta Rhymes, Phife Dawg (A Tribe Called Quest), and Pete Rock.

Diamond D has worked as a producer on some classic hip hop records, including A Tribe Called Quest's "The Low End Theory", The Fugees' "The Score", and Mos Def's "Black on Both Sides". More recently he appeared on British electronic artist Aim's album "Hinterland". In 1997, Diamond D started his own record label, "Diamond Mine Records" from which he has released his two latest solo albums "Grown Man Talk" & "Diamond Mine"