This item uses natural stones. The string is made of elastic rubber. Flower Amazonite approximately 8mm Inner diameter approximately 48mm [Flower Amazonite] It is said to be a stone that soothes the heart and cultivates a positive feeling with its gentle colors. Its natural and soft atmosphere makes it easy to match with any scene. ◇ Because natural stones are used, there may be chips, scratches, and variations in color. We hope you enjoy these aspects as well. ◇ Please refrain from purchasing if you are looking for the perfection of a mass-produced product, as this is a handmade item. ◇ There may be cases where the knots or ends of the string are not tucked away, or are left as part of the design. ◇ The color of the actual product may differ from the photos depending on your device and environment. The color and pattern, the individuality of each stone is unique in the world. We hope you will enjoy the power stone casually, like a small amulet that stays close to your daily life. Please check the profile for bulk purchases.