(6) Check with dichroism: natural amethyst has dichroism, and false crystal has no dichroism.

Moreover, this material is incredibly versatile, being suitable for various applications. Architects often opt for gradient frosted glass in facades and windows, where it can beautifully diffuse sunlight, reducing glare while maintaining an open and airy feel. This makes it an eco-friendly option, enhancing a building's energy efficiency by minimizing the need for artificial lighting during the day.

The unit price of crystal is several times or even dozens of times higher than that of glass.

In terms of sustainability, low-e glass panels are environmentally friendly. By reducing the energy consumption of a building, they help to decrease greenhouse gas emissions and lower overall carbon footprints. This is not only beneficial for the environment but can also contribute to obtaining green building certifications and incentives.

Additionally, the impact of surface silvered mirrors extends into the realm of psychology and self-perception. Mirrors have always been associated with self-reflection, both literally and metaphorically. The ability to view oneself in a clear and undistorted manner can influence personal perception, self-esteem, and even social interactions. As the surface silvered mirror became commonplace in households, it also fostered a culture of self-examination and introspection, prompting individuals to explore their identities and appearances in new ways.