Sardonyx – A highly protective stone that embodies a vibration of happiness, optimism and confidence. It helps to boost your self control and your level of personal power. It has excellent metaphysical properties that encourage motivation, willpower, discipline and strength of character. This makes it a good stone for anyone studying or if you work in a job where you require mental discipline to focus on the task at hand. This stone creates an excellent grounding action through the earth and base chakras and brings you back to earth after spiritual work.