My First Pearl's all 925 sterling silver items are designed with Italian imported silver chains; the silver chain is further electroplated with a layer of Rohodium to make the color more durable. Maintenance Tips: 1) Sterling silver will change color and be wiped clean with a cloth after being worn, and then put into a plastic bag for storage to reduce its direct contact with the air and slow down the oxidation rate. 2) Avoid storing sterling silver for a long time under the hot sun or under spotlights, which will cause the sterling silver to turn yellow. 3) If it becomes dark, you can use a silver cloth to clean; if it is not necessary, avoid using silver wash water, because the pearl is not acid or alkali, any chemical substance can also damage its pearl layer, so that the pearl luster disappears, the surface Become rough and dull. 4) Sterling silver is a very soft metal. Do not pull too hard on the work. Thank you.