This item uses natural stones. The string is made of elastic rubber and is stretchy. Sardonyx Gray 8mm / Crackle Quartz 8mm / Other decorations Inner diameter approximately 45mm 【Sardonyx】 Known as the "stone of marital happiness," it is said to deepen bonds and cultivate positive feelings. Its bright and powerful pattern is like a source of energy. 【Crackle Quartz】 Crackle quartz sparkles by reflecting light with its crack-like patterns. It is also said to brighten the mood of the wearer. The sparkle changes depending on the angle of the light, giving it a different appearance each time it moves. The colors and patterns, the individuality of each stone is unique in the world. We hope you will enjoy these power stones casually, like a small amulet that accompanies you in your daily life. ◇ Due to the use of natural stones, there may be chips, scratches, and variations in color. We hope you will enjoy these characteristics 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 product may appear different from the actual product depending on your device or environment. Please check the profile for bulk purchases.