Emerald is a stone of wisdom, enhancing memory and increasing mental clarity. It combines intelligence with discernment, and brings to the conscious mind what is unconsciously known. Emerald also increases focus and intent.
Black Onyx Crystal helps empower the soul that have been kept within and it frees it from the darkness. Even the deepest and darkest fears, the Black Onyx relieves, calms, and frees the mind and the body from this negative entity.