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RAPAPORT… Gübelin Gem Lab has unveiled a radical solution for tracing
the origin of emeralds, using nanotechnology to mark stones with an invisible
imprint that is accessible at any stage of the supply chain.
Branded the “emerald paternity test,” the technology is a “true
game-changer for the colored-gemstone industry,” the Switzerland-based
laboratory said in a statement Monday.
DNA-base…

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