Take pearlescent pigments as an example, pearlescent pigments are a class of pigments with pearl luster, which are deposited on the substrate (generally natural mica, synthetic mica, glass sheet and other sheet-like materials) above a layer or alternately deposited multiple layers of metal oxides or non-metallic oxides and formed a flat sandwich body with a structure similar to sandwich. Due to the difference in refractive index between the substrate and the oxide deposited on its surface and each oxide, when the light shines on the surface of the pearlescent pigment, the incident light will be refracted and reflected at the interface of each layer of the pearlescent pigment, and the color of the pearlescent pigment that people see is the result of the superposition of light after multiple refractions and reflections of the light, that is, the interference phenomenon of light.

Authoritativeness in the mica industry can be gauged through a supplier's certifications and affiliations. Suppliers who hold ISO certifications or are members of relevant industry bodies demonstrate a commitment to maintaining high standards. These credentials often assure clients of consistent product quality and adherence to international safety and environmental regulations. Additionally, authoritativeness is evident when suppliers contribute to industry publications or participate in global conferences, showcasing their knowledge and influence in the field.