Opal Jewelry Blog — About Opal
What Makes Australian Opal So Colorful? The Science Behind Opal’s Play-of-Color
Posted by Mark Hileman on
Why does Australian opal glow with brilliant flashes of red, green, blue and orange? Discover how microscopic silica spheres interact with light to create opal’s extraordinary play-of-color—and why Australian crystal opal can appear to glow from within.