Rough ( 2"+) and polished stones (3/4" - 1"). According to modern healers who use stones in healing, green agate increases compassion, generosity and a keen sense of justice, along with enhancing mental and emotional flexibility, improving decision-making and resolving disputes. Considered to be a Talisman, Tree Agate is a stone of inner peace. Tree Agate calms nerves, and can be combined with Clear Quartz to deepen meditation and prayer. It emitting calming and centering energies into the environment.