Prehnite is a good stone to take on retreats or to other situations in which one must undergo some sort of spiritual discipline. Prehnite is a purifier for the energies of the digestive system, as well as the kidneys, adrenals, liver, and gallbladder. Prehnite brings joy to the heart and peace to the mind. It supports healing, particularly where there is an imbalance in the circulatory system or blood. Prehnite assists the expression of emotions or thoughts and helps one communicate in a nonjudgmental way. It helps one consider the impact of one’s words before speaking and quiets those who talk excessively.