Sardonyx is 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 disciple to focus on the task at hand. Approximately 12 to 14 stones in a bag.