How variations in UV lamp output can affect observed fluorescence colour and intensity.
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A simple chart of optical defects in diamond, including those that produce colouration and fluorescence colours.
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Knowledge of type allows gemmologists to better evaluate if a diamond might be treated or synthetic, and whether it should be sent to a laboratory for testing.
Read MoreThis article compares some of Chatham Created Gems’ synthetic coloured diamonds to natural diamonds and explains the results.
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