7th Heaven star, Stephen Collins is joining the cast of the drama, Blood Diamond with Leonardo DiCaprio, Jennifer Connelly, and director Ed Zwick for Warner Bros.

The story centers on a poor African farmer, played by Djimon Hounsou, who gets caught up in a conflict between an U.S. diamond smuggler (DiCaprio) and the syndicate that controls the local diamond mining industry; Collins plays an ambassador, says The Hollywood Reporter.

Filming is underway in South Africa; Warner has set a release date of January 12 for Blood Diamond.

Blood Diamond was released December 8th, 2006 and stars Leonardo DiCaprio, Djimon Hounsou, Jennifer Connelly, Kagiso Kuypers, Arnold Vosloo, Antony Coleman, Benu Mabhena, Anointing Lukola. The film is directed by Edward Zwick.