925 Sterling Silver 18″ inlaid opal Starfish box chain necklace with Lobster claw lock. Rich Rhodium plate finish giving the look and feel of White Gold as well as tarnish protection. Beware of purchasing chains that are not Rhodium plated, for they will tarnish to a yellow color and never will look the same as new. Great for any occasion. Supple, Versatile,Kink free, Silky smooth Product Type: Sterling Silver Rhodium plated box Chain / Necklace Product Dimension chain Length 18″ Product Dimension starfish 11/16″x 11/16″ Product Fastening: 925 Sterling Silver Rhodium plated Lobster claw lock Product Materials: Sterling Silver, Rhodium, simulated Opal Product Hallmark: 925 stamped on the end caps and lock of the piece Product Finish: High polished with Rhodium Plate Finish for Tarnish Resistance Fast & free USA Shipping 1st Class Mail USPS Worldwide Shipping Available 1st Class International Mail Care instructions: Clean Rhodium silver with warm water and a mild liquid soap . Rinse and dry with a soft cloth immediately to avoid mineral residue from the water. Never use any chemicals toothpaste, brushes,or abrasives of any kind on your Rhodium itemsTarnish proof finish