Diopside
Hardness: 5.5-6.5
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 dis-ease
Spiritual: A stone of knowledge and correspondences, great for tarot/rune readers