Both the pendant and chain are stamped 10K The small diamond pendant in the last picture shows size reference The chain measures 14 1/2" long and fits snugly but comfortably around the neck Looks great with just about any top or tee shirt - I'm just ready to rotate out of my jewelry case A nice weight - I've worn for years with no issue. Made with a nice sturdy lobster clasp Ready for the next person to wear and enjoy!