[1][2] Lambda Psi Delta (referred to as "LPsiD") was established by a group of women known as the Nine Black Diamonds.

[3] They decided to leave their former sorority and create an organization whose primary goal was the upliftment and empowerment of women and their communities.

[9] Lambda Psi Delta chartered undergraduate chapters in Florida, New Jersey, Connecticut, Texas and Louisiana.

[9][12] Its five tenets or pillars are Intellectual Development, Empowerment of Women, Leadership, Cultural Awareness, and Upliftment of Community.

[15] Its Diamond Days was a weeklong event each March that celebrates the sorority's founders with various community service and political projects at the chapter level.

[16] Other programs included the LPsiD College Resource Center and the Lambda Psi Delta National Educational Campaign Programs that addressed current societal concerns, such as autism awareness, breast cancer, global warming, date rape, and identity theft.

[17] Its National Public and Political Service Program focused on changing initiatives, including multiple sclerosis research and STEP UP – SPEAK OUT!