This necklace also includes MarahLago's innovative Snake Chain - it measures 1.25mm thick and can adjust from any length up to 21"! The square snake chain has a silicon clasp that slides so the chain can be worn at any length! Fabulous! And it's from MarahLago, the only name in high quality designer Larimar jewelry. Dimensions: Pendant: 1 1/2" long X 1" wide Chain: adjustable up to 21"