Later, with the development of science and technology, people gradually realized that mica minerals have high insulation, high temperature resistance, strong acid and alkali resistance, and mica also began to enter building materials, fire, plastics, paper, rubber, pearlite pigments and other industries. These are mainly Muscovite and phlogopite.

Cosmetics: In some high-end cosmetics, resin mica powder is used to add a subtle shimmer to products like eyeshadows and highlighters. Its fine texture ensures smooth application and a natural-looking glow.

- coatings and inks In the automotive and decorative coatings sector, mica-based pigments are used to achieve shimmering effects that enhance the visual appeal of vehicles and products. These pigments provide not only aesthetic enhancements but also protective barriers, contributing to the longevity of coatings.

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.