Diopside contains chromium which provides the gemstone with its rich green color. Diopside can also be found in blue and black. Diopside healing crystals help heal trauma, and is sometimes referred to as the "crying stone.” It can help us get in touch with our feminine sides, reducing aggression and stubbornness. Diopside can help open the mind to a positive attitude. Use Diopside crystals to balance the Heart Chakra.