Emerald is in general a balanced stone in terms of the doshas but can decrease Agni or the digestive fire. It strengthens the nerves, lungs and vocal organs, improving perception and respiration. It aids in balancing endocrine function and helps promote growth and development in children.
Emerald improves the mind and emotions and stimulates the senses. It provides us better powers of speech, communication and expression, aiding in the learning process, particularly for children. It grants acuity of perception and gives speed, agility and comprehensiveness to our mental work.
Emerald sharpens the mind for yoga, mantra and meditation. It helps us develop the higher or spiritually discriminating aspect of the mind (buddhi) for the Yoga of knowledge and aids in teaching spiritual subjects. It is also good for developing Prana and healing energy.