• Trigonal Crystal Structure
• Stone Group:  Oxide
• Can be formed as Igneous, Metamorphoic, Sedimentary
• Composed of Silica Dioxide (SiO₂) with Chromium muscovite mica inclusions

The Green color of this stone directs its action towards the chest.

Functions (from Leslie J Franks:  Stone Medicine

1. Regulates the Qi* for:
   • menstrual cramping, stress-related headaches*
   • diaphragmatic constriction, pain*
2. Regulates Liver Blood* for:
   • stagant Liver Blood:  dysmenorrhea, irregular periods*
   • blood pressure (high or low), high cholesterol, arteriosclerosis*
3. Clears Heat in the Blood; calms the Shen* for:
   • imbalanced emotions*
   • agitation, irritability, insomnia*
4. Detoxifying* for:
   • post-chemotherapy or post-drug therapy*
   • skin conditions:  allergies, acne, psoriasis, eczema, suppurations*
   • Lin disorder:  difficulty urinating, including symptoms described as cloudy, painful, stone, taxation, and blood; urinary tract infections*
5. Intentional Use for:
   • health palace - to connect with one's illness*
   • promoting joy and laughter*
   • opening the heart to appreciate the pleasures of the world*
   • relieving homesickness*
6. Emotional use for:
   • calming the Shen, especially when faced with uncertainties*
   • releasing pent-up emotions*