What is the title of TLC’s 1994 album certified diamond by the RIAA?

TLC’s 1994 album certified diamond by the RIAA is CrazySexyCool.

CrazySexyCool was TLC’s second studio album, released on 15 November 1994. The trio—Tionne “T-Boz” Watkins, Lisa “Left Eye” Lopes and Rozonda “Chilli” Thomas—worked with producers including Dallas Austin and Babyface to create a blend of R&B, hip-hop and pop.

The album produced major singles such as “Creep,” “Red Light Special” and “Waterfalls.” It reached number three on the Billboard 200 and became TLC’s commercial breakthrough. The RIAA later certified it diamond, a designation representing at least 10 million certified album units in the United States.

The title is sometimes confused with TLC’s debut album, Ooooooohhh... On the TLC Tip, or with later releases FanMail and 3D. CrazySexyCool is specifically the album associated with the group’s best-known mid-1990s run and its diamond certification.