All of our products are 925 sterling silver. The chain length in our necklace is 42 cm. With our effective Rose Coating, our products have a longer lifespan and a more sparkling appearance. To use your silver jewelry with its first-day sparkle, you should keep it away from chemical products such as disinfectant, wet wipes and deodorant. When not in use, keep your jewelry in a moisture-free and air-tight box. All products are delivered with a gift box and gift bag.