27/02/2026
Did you know fluorescence plays a powerful role in the beauty and identification of rubies?
At IGL Gem Lab, we study how geological origin and trace elements influence a ruby’s reaction to ultraviolet (UV) light. Many natural rubies fluoresce red under UV due to the presence of chromium within their crystal structure — creating that mesmerizing internal glow once thought to be “magical.”
Today, fluorescence is not just beauty — it’s science.
Under strict gemological examination, fine rubies — especially those with elite “pigeon blood” characteristics — are carefully analyzed under both short-wave (254 nm) and long-wave (365 nm) UV light. Their fluorescence intensity provides critical insights into origin, chemistry, and authenticity.
At IGL Gem Lab, UV analysis is part of our advanced identification process — combining tradition, technology, and decades of expertise.
Want to understand fluorescence beyond the surface?
Join our IGL Gemology Courses and experience hands-on training in professional gemstone testing and interpretation.
IGL Gem Lab
Where Science Seeks the Truth 💎🔥
