Bogus Diamond Certifiates

In the past several months we have seen a definite increase in the amount of false diamond certifications. The most typical scenario is where the client has papers stating an "E" color grade on a diamond that we grade as an H or I. This is far beyond the realm for professional disagreement. Since the transaction prices tend to reflect the true grade of the diamond, it's obvious that the dealers aren't selling below their cost, just utilizing false documents to help make a sale.
One recognized lab out of Israel, is a re-occurring culprit in the above story, but others with names that only look familiar are cranking out official looking certificates that bear little resemblance to the diamond described. Since some of these certificates often look like GIA documentation, we have been working with them to investigate further.