The border of the coin is made of 24-Karat Gold Wrapped in Silver. It has a spiral top and sterling silver is soft in texture, which will make it easy for you to install/remove coins. But when it's incorporated into the coin, it's sturdy and protects the edge of the coin, which is very secure. The border color of this coin is very bright and will make your pendant unique. It is made in China and of good quality.