2. White light: There will be no color cast under white light irradiation, and the internal structure of jadeite can be seen. Yellow light: close to natural light, it does not reflect light when illuminated, which is conducive to naked eye observation and can see the color of jade. Purple 365nm is an invisible light wave, which can be used to identify fluorescent substances.
3. Lighting is for store products, and different jewelry products in jewelry stores need different lighting.
4. Metal halide lamps can be divided into yellow light and white light, and even blue light is rare in the market (generally used in special environments or aquariums). Metal halide lamps have the characteristics of generating strong light and illuminating a large space.