This sterling silver necklace is crafted entirely from S925 sterling silver, including the chain, pendant, and clasp. It is guaranteed authentic and can pass any S925 purity test. The pendant measures 0.49 by 1.56 inches, and the chain is 18 inches with a 2-inch extension for adjustable length to fit adults comfortably. With its elegant Tree of Life design, this necklace is perfect for daily wear or as a thoughtful gift for loved ones, such as a partner, mother, daughter, or friend. It makes a beautiful and meaningful birthstone gift. For any questions or concerns, feel free to reach out—we provide prompt assistance within 24 hours. Thank you for your support.