GIA is the industry standard throughout the world for grading accuracy. They are an education lab, with no interest on where, or even if you purchase a diamond. This is the best assurance of accuracy that exists. A diamond with a GIA grading report, or GIA certified diamond, is the highest standard.
EGL's grading system looks similar to that of GIA’s, but is actually quite different. Their grading standards are far more liberal than that of GIA's. Nothing wrong with buying an EGL stone, as long as you understand this and pay accordingly.
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