It is said that Rainbow (or Banded) Onyx is seen as a stone of happiness, good fortune and strength. It is thought to bring strength, balance and self control. It is perfect for people under extreme mental or emotional stress, as it brings balance to mind or body as well as a sense of security. Onyx is also a great concentration stone for people who are "off with the fairies" as it brings focus and grounding making it easier to remain in this realm. An empowering stone that can help you approach a lesson or task with self-confidence. Onyx is a stone of persistence, willpower and positive thinking.