Wisdom 

Properties : 

- Stone of Light 
- Helps you to be forgiving 
- Enhances memory 
- A good ally against depression 
- Self-control 
- Calming and relaxing 

Chakras: Root, Sacral, Solar Plexus and Heart / Muladhara, Svadhisthana, Manipura and Anahata 

Sign of the zodiac: Gemini 

Planet: Mercury