Size: The length of the bracelet is about 15-16 cm, and the length can be customized (the cost is extra, welcome private discussion) Other materials: brass plated 14k gold chain, lavender series: cordierite/tanzanite/moonstone, green series: citrine/diopside/green chalcedony, red pink series: strawberry crystal/rhodolite/pink Australia Bao, Japan-made brass gold-plated lazy button "Precautions for Jewelry Maintenance" ＊If the jewelry is not pure gold or K gold, it will fade. In order to extend the life of the jewelry, please wipe it and put it in a zipper bag after wearing it. ＊Do not expose the jewelry to chemicals, sweat or bathing. ＊Returns of ear acupuncture products are not accepted after they are sold for hygiene reasons. ＊Natural stone products often have natural reactions such as black spots, cotton wool, and ice cracks. Each stone is unique. Perfectionists please think twice. ＊Hand-made products are only made after the order is placed. Application for return or exchange due to subjective feelings, "inconsistent with imagination", or artificial defects is not accepted. Please make your own discretion and accept before placing an order.