There's no doubt about what ya like doing in the gym with this necklace. The 45 lb weight plate necklace is made of solid sterling silver. Yup, it's all sterling silver from chain to pendant. The darkened part of the weight plate, the black, is created through man made tarnish. In other words, it's darkened by an induced tarnish.
Itty bitty details: This weight plate is 18mm diameter, the size of a penny. It's about 1.8mm thick. If you like smaller cutey things, I also have a mini weight plate necklace. There is an option to engrave a personal message on the back. I show examples in the photo gallery.