We use metals made of gold-filled material - a high-quality alloy of 14-carat gold (gold 585) and another metal (copper, brass, sterling silver) rolled on in a special process and permanently connected to the base metal at welding temperature or 925 silver. It is great to mention that the gold layer is about 100 times thicker than normal gold plating. In other words, it's not a thin layer that quickly peels off, but a real alloy. This makes it much more valuable and resilient, but understandably also more expensive. The thick layer of gold creates a visually beautiful, high quality that anyone can wear.