This item uses natural stones. The string is made of elastic rubber. Flower Amazonite 8mm / Crystal 8mm Inner diameter: 55mm 【Flower Amazonite】 This stone is said to have a gentle color that calms the heart and cultivates positive feelings. Its natural and soft atmosphere makes it easy to match with any scene. 【Crystal】 Crystal has a transparent and clear shine. It has been known as a "stone of purification" since ancient times, and is said to be a simple yet versatile amulet. It goes well with any stone and harmonizes the whole when combined. ◇ Due to the use of natural stones, there may be chips, scratches, and differences in color. We hope you enjoy these textures as well. ◇ Please refrain from purchasing if you are looking for the perfection of a mass-produced product, as this is a handmade item. ◇ The knots and ends of the string may not be tucked away or may be 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 stones casually, like a small amulet that stays close to your daily life. Please check the profile for bulk purchases.