2Jewellerymen's sterling silver bracelet, 925 Sterling Silver Bracelet, Thai silver is made of 925/990 sterling silver. It is a special process called black silver made of old vintage special craftsmanship. It melts the mixture of silver and sulfur on silver jewelry and forms a covering layer in a vitreous state. The silver covering, the loose layer, the black, and the bright silver-white of the silver form a sharp contrast, which produces a special visual effect. Due to the special anti-aging treatment, the black silver jewelry not only does not change color for a long time,