The 45 lb weight plate necklace is sleekly unisex and made of solid sterling silver. Weightlifting jewelry for power lifters and other badasses who like to lift heavy things. The weight plate is 18mm diameter, the size of a dime. Handcrafted in NYC. Care instructions for Weight Plate: To keep the black portions intact, do not use dips or immerse in water. Just use polishing cloth to clean tarnish. If you love to lift, we also have barbell necklace and a mini weight plate necklace.