Chrome Diopside Hardness: 5-6 Structure: Monoclinic Zodiac: Virgo, Gemini Chakras: Heart Properties: Mystery revealing! Physical: encourages curiosity and learning, especially for new students or for a prospective new job. Helps high blood pressure, eases headaches, combats addiction, eating disorders, etc Emotional: helps people suffering from mental, emotional, and physical disease Spiritual: a stone of knowledge and correspondences, great for tarot/rune readers.