A friend called because her friend was in a panic about her diamond turning blue after a night on the town.  Hear the story and learn more about fluorescence in diamonds in this video blog.


Diamond fluorescence is the effect that is seen in some gem-quality diamonds when they are exposed to long-wave ultraviolet light (such as the lighting frequently seen in dance clubs). Under most lighting conditions, this fluorescence is not detectable to the eye. However, if a diamond is naturally fluorescent, it will emit a soft colored glow when held under an ultraviolet lamp or “black light.” Fluorescence is not dangerous to the diamond or to the wearer; it is a unique and fascinating quality that occurs naturally in a number of gems and minerals.  Learn more about diamond fluorescence.


Master Gemologist Appraiser