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Tag Archives: diamond fluorescence
GIA GTL's Colour Grading Of Fluorescent Diamonds
GIA GTL’s Colour Grading Of Fluorescent DiamondsConsumer Deception? 35% Of Diamonds Graded Will Now Potentially Get A Better Color Grade By Fiat Of The Gemological Institute Of AmericabyMartin D. Haske GG, NGJA, MS The nonprofit Gemological Institute of America had, … Continue reading
The Paradox of Fluorescence by Daniel F Katz GG
“Fluorescence is a luminescence that is mostly found as an optical phenomenon in cold bodies, in which the molecular absorption of a photon triggers the emission of another photon with a longer wavelength. The energy difference between the absorbed and … Continue reading
Diamond Imports The Diamond Guru 