Tourmaline: A gemstone with rich colors, including red, green, blue, purple, yellow and brown.
* Pearl: round, smooth and moist, which can add elegance to the bracelet.
* Crystal: transparent and bright, often used to make exquisite bracelets.
In addition, colored bracelets may also be made of other materials, such as metal, wood, glass and so on. The specific choice of materials depends on the design and manufacturer of the bracelet.