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4:23
YouTube
Gandhi Enterprises
Does natural ruby glow under UV light? Fluorescence in rubies in ultraviolet light
Natural Rubies in short-wave ultraviolet light. Real natural rubies as examples in SW UV light and how much they glow can be seen in the video. The stronger the glow, the more glowing red it will show in natural sunlight (as the sunlight also has UV light along with visible light). This is why, Burmese rubies are the most expensive rubies as ...
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