Diopside, a rich green crystal often found in metamorphic rocks, is revered for its ability to stimulate intellect and the desire for learning. It is associated with the heart chakra, promoting emotional well-being by encouraging compassion, forgiveness, and the release of grief or trauma. Metaphysically, it's believed to enhance the wearer's understanding of love and commitment. Health-wise, diopside is thought to aid in the recovery from surgery or illness, strengthen the cardiovascular system, and improve lung function, making it a stone of physical and emotional healing.