Iridizing refers to the process of creating an iridescent surface on an object by coating or manipulating its surface. However, if you wish to add new dimensions to your vocabulary, there are other words that convey the same meaning. Some synonymous terms for iridizing are opalescing, shimmering, lustrating, and pearlescing. Most commonly, iridizing is used to describe glass, although it can apply to metal, ceramic, and plastics. The effect is magical to behold, as surfaces seem to change colors and shimmer as they catch the light at different angles. It is an effect that can turn everyday objects into unique and eye-catching pieces of art.