Toad BISMUTH METAL JEWELRY & ARTNatural bismuth is a delicate crystalline metal that is rarer than silver. Found along with other rare metals in deposits and veins, this is naturally occurring element (#83 on the periodic table) metal produces interesting colors and crystal structures.Bismuth develops a clear oxide layer that produces the vibrant colors. Through a phenomenon called “thin film interference,” it breaks the light spectrum into different colors. This occurs because the width of light waves and oxi..