This beautiful set of two 18-inch necklaces is made of high-quality 925 sterling silver, ensuring long-lasting durability and style. The pendants are in the shape of a cross and have a floating/keepsake design, making them a unique addition to any jewelry collection. The necklaces come with a spring ring closure and are signed by the seller. Although there is no seller warranty, rest assured that these necklaces are in very good condition. The color of the metal is silver, making them perfect for both casual and formal occasions. Customize them or keep them as is - either way, they are a timeless piece of fine jewelry that will elevate any outfit. Check pics. Only 1 pendant is stamped sterling. Neither is magnetic but I don't see a stamp anywhere on the smaller cross. Message any questions. Thanks for looking. Enjoy!