What is 925 sterling sliver ?
Pure silver can be combined with many different types of metals, sterling silver is created when combining pure silver with copper. Sterling silver jewelry can be composed with different amounts of copper but mostly can be seen with the 925 stamp, meaning that the composition is of 92.5 percent silver and 7.5 percent copper. This has been found to be a good combination for maintaining the silver's durability without harming its sparkle.
Here are some suggestions to clean Jewelry
A. General cleaning, can be soaked out in alcohol after a few minutes, the sweat will be volatilized with the alcohol, dry it after flushing by cleaning water. B. Use the toothpaste brush with neutral detergent or commercially available jewelry cleaner brush treatment to deal with the accumulation of sweat. Besides cleaning, K gold surface will wear small traces or decrease the brightness because of long-time friction, wipe clean the gold surface by using the K gold cloth can solve this problem, but the best is do a polishing and finishing plating processing within 2-3 years, jewelry can return to the original beautiful and bright light.