, 925 Sterling Silver Bracelet, Thai silver material is 925/990 pure silver. It is a particular process called black silver made of old vintage 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 silvery white contrast sharply, resulting in special visual effects. Due to the special anti-aging treatment, the black silver jewelry not only does not change color for a long time,