Rob Bates was spot on. Having grading laboratories was meant to standardize grades in the first place. But it hasn't happened. Sad really.
Useful links:
http://www.l-a-b.com
http://www.diamonds.net
http://www.gia.edu
http://www.americangemsociety.org
http://www.gubelingemlab.ch
http://www.ssef.ch
http://www.hrd.be
http://www.igiworldwide.com
http://www.cibjo.org
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