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The Gemological Institute of America (GIA) is now testing polished diamonds submitted by major diamond manufacturers using its latest initiative – the GIA® Source Verification Service.
According to the lab, companies started bringing in diamonds for verification in early July, with the GIA-graded diamonds with verified source country information to be made available as the first submissions are returned and more manufacturers join the programme.
Diamond manufacturers are vetted by an independent auditing firm to measure their diamond-tracking capabilities before they can participate in the service. Only polished natural diamonds with verified source documentation, including Kimberley Process certificates and invoices, from vetted...
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