Emerald (Panna) - Mercury Represents Our Communication Skills
 
Believed that it increases intelligence and brain power. It improves faculties related to the brain such as memory. communication, intuition, the intellect ability to learn, rationality, wit, skillfulness, and dexterity. One will be educated, happy, fortunate, & highly respected. It is advised that newly wed couples should avoid wearing this, as it impairs conjugal happiness due to reduction in sexual desires.