This high polish sterling silver initial charm is a classic! Dimensions: 16" cable chain with spring ring clasp. Pendant is 3/4". 1mm thick. Materials: .925 Silver, Rhodium plating provides a durable, tarnish-resistant finish. Ships in a branded jewelry pouch and box, perfect for gift giving! Care Instructions: Take steps to protect your sterling chains by keeping them in airtight packages, use tarnish-resistant products (such as tarnish tabs or strips) that absorb harmful chemicals, and store sterling findings in a cool, dry place. Most tarnish is easily removed by polishing with a mild abrasive or soaking in an anti-tarnish solution. The best way to combat tarnish is to wear your silver jewelry! It becomes shinier the more it's worn (the friction slows down tarnishing). For more information check out my Journal entry : Tips and Tricks for How to Best Care For Your Jewelry