I have a thick cable cuff bracelet. It looks like silver and a magnet doesn’t stick to it, but I didn’t see any metal content markings so I took it to a refining company. They checked it with a laser and said it’s silver over copper. It has a large really dark stone on each end and 6 square stones that are orange and really dark gray. The last picture shows it with 2 other similar cuffs that I have listed. See my other ads for jewelry, artwork, home decor and more.