This product is a natural crystal that produces black spots and cracks during growth and polishing, which are natural phenomena and not defects. Please choose and purchase carefully The bracelet is designed and handmade by the shop owner, unique and one-of-a-kind Basic information ：  Bracelet diameter: 1.98 inch(Adjustable bracelet length)Bead diameter:0.02 inchNumber of beads: 18 pieces Color: Green and yellow Material: Natural CrystalWeight: 16.33g   Note: The size is measured manually and there may be slight differences