■ Size: Inner Circumference: Approx. 6.7 inches (17 cm); There are many types of power stones, each has a unique and energetic characteristics. Choose the power stone that best suits your wishes and wear it to enhance your power! But the dependence is not too good. The power stone is just a supportive, so dont forget your effort! And get along with the power stones. It is not too dependent, but it is sure to tell you how you trust and cherish. It is important to purify the power stone so that it always has a stable energy.