What are the differences between iridescent, holographic, and metallic glitters? When should I use each type? From their unique appearances on crafts to the intricate manufacturing processes, we take a quick but informative look at 3 of the most popular glitter types. Whether you seek a delicate color play, a mesmerizing rainbow effect, or a classic metallic sheen, this guide simplifies the glitter choice for your next project. Explore how these glitters shine under epoxy and make informed decisions for your next project. Or just show off your knowledge of glitter.