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Sunday, July 19, 2009

Diffusing Copper Into Tourmaline

Potential for Diffusing Copper into Tourmaline via GIA Research (Thailand)
http://www.giathai.net/pdf/The_copper_diffusion_of_tourmaline_experiment_June_16_2009.pdf

Educational/insightful. If doubtful, always consult a reputed gem testing laboratory.

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