With its rainbow hues that twinkle in the light, this stone radiates the energy of hope and joy. Formed with volcanic ash, the opal centers the mind, and was used in ancient times to promote happy dreams. Glimmering shades of amethyst, aqua and garnet, the stone is thought to hold the qualities of all the stones it resembles. If you are drawn to this stone, it may be because an inner strength is ready to be revealed.