Bismuth jewelry is prized for its vibrant colors and intricate patterns. The colors of bismuth are created by a phenomenon called thin film interference. When bismuth is melted and cooled, it forms a thin oxide layer on its surface. This oxide layer is what gives bismuth its distinctive rainbow colors. The colors of the oxide layer vary depending on the thickness of the layer and the angle of light that is reflected off of it. Bismuth Brilliance jewelry is a relatively safe metal to wear. It is not known to cause any health problems, even when it is in contact with the skin. Bismuth jewelry is hypoallergenic, meaning that it is unlikely to cause an allergic reaction and mildly comes into the levied checks for sensitive skin although Bismuth jewelry is relatively inexpensive.This makes it a great option for people who are looking for a unique and affordable piece of jewelry.