Gemstone Color Change Phenomena
Step 2: Advanced Gemology
Frequently, people ask me to explain how gemstone color change works. Some stones can change color under different light sources. Although the answer is pretty complex, a few diagrams can really help.
To understand how this phenomenon works, you need to learn about light and how gems get their coloration.
White Light and Colors
We know that sunlight or white light contains all colors. Pass a sunbeam through a prism and you’ll see a rainbow on a nearby wall. You can also consider light as energy. Visible light is …