Naked Science Forum
Non Life Sciences => Chemistry => Topic started by: thedoc on 29/04/2012 11:52:02
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Sandra Kay asked the Naked Scientists:
My question is about diamonds.
A manufactured diamond will fluoresce purple under a black light. I was surprised that my cluster ring and wedding band were purple but my single 3/4 carat diamond was bright white. Is there such a thing as real diamonds (ie not manufactured) fluorescing under black light? Or could the only reason they fluorecse be because they are manufactured? How would the value of real v manufactured compare for like diamonds.
Thanks
Sandy
What do you think?
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From wiki
"About a third of all diamonds will glow under ultraviolet light, usually a blue color which may be noticeable under a black light or strong sunlight. According to the GIA, who reviewed a random sample of 26,010 natural diamonds, 65% of the diamonds in the sample had no fluorescence. "
So, yes, roughly a third of natural diamonds fluoresce.