This Item is made to help mitigate unhealthy nnemf exposure hence the copper. The QLink Pendant does 3 important things: 1. It strengthens your resilience and resistance to the effects of stress. 2. It increases energy and enhances mental performance, especially under pressure. 3. It strengthens your capacity to function in EMF saturated environments. (EMF is the electromagnetic field generated by electronic devices and wireless communications). Every silver piece is handmade and finished by trained artisans; no two are alike. As a result, you may notice minor surface markings that naturally occur during the tooling/smelting/casting process. These birthmarks are a natural result of the creative process and make your product absolutely unique. Manufactured/Hand built with clarity in the USA. Casing: Solid .925 Sterling Silver Weight: 12g W:29mm X H:29mm X D:5mm