What surface treatments on PVC abstract pieces create iridescent optical effects?

PVC abstract pieces can achieve mesmerizing iridescent optical effects through specialized surface treatments. One common method is applying thin-film interference coatings, where multiple layers of transparent materials create light diffraction, producing shifting colors. Another technique involves embossing micro-prismatic patterns onto the PVC surface, scattering light to generate rainbow-like reflections. Metallic or pearlescent pigments mixed into clear topcoats also enhance iridescence. Additionally, vacuum metallization deposits a thin metallic layer, refracting light for a holographic finish. For DIY projects, spray-on iridescent finishes or heat-transfer films offer accessible solutions. Each method manipulates light differently, allowing customization of color intensity and pattern. These treatments are popular in art, decor, and industrial design for their eye-catching visual appeal.