3 Questions for…Matt Crimmin

The GIA’s new Mine to ­Market (M2M) program tracks select diamonds through the pipeline and provides expanded information about the stones for consumers. Vice president of laboratory operations Matt Crimmin explains how it works.  How does this program track ­diamonds? If you gave me a polished diamond, I couldn’t tell you what mine it came from. But if you gave me a piece of rough and let me look at the polished, I could tell you that this polished did come from this rough. Because of the limited amount of diamond producers in the world, if we collect rough from a producer in a sealed package, we can collect scientific data that includes morphology, spectroscopy, as well as crystal growth structure. Then we can capture similar data on the polished. So we can then link the polished output to that rough. How certain are you of that ­diamond’s origin? There will be a percenta
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