The Bismuth crystal’s beautiful color happens when metal oxidizes from its exposure to the oxygen in the air. When iron oxidizes rust occurs with red-orange colored layers. When Bismuth oxidizes you can see a variety of colors like pink, purple, green, blue, and yellow. The iridescent colors are the result of natural oxidation. There is no shaping, enhancing, or manipulation of these crystals.
Bismuth has been used as a stone of transformation; it directs the change to orderliness and calms the state of change. It stimulates cohesiveness in groups and relationships.