Latest news letter fro GGTL
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[pdfview]http://www.ggtl-lab.org/media/newsletter/GGTL_Newsletter_No_4_March_2015_%28EN%29.pdf[/pdfview]
A nitrogen rich CVD synthetic diamond
Thomas Hainschwang's & Frank Notari's GGTL is on the cutting edge of international gemological research.
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