GREEN AGATE(An All-Around Health Stone) Its most noticeable properties overall are balancing yin/yang energy, courage, protection, healing, and calming. Agate is a stone of strength. Agate enhances creativity and strengthens the intellect, making it a beneficial stone for both students and artists. It is also known as a good luck stone, a conservation stone, and enhances longevity. Agate is a very protective stone. Its green color translates to wealth and abundance in the many facets of life.