Which
diamond grading labs are considered to be the best and most accurate?
Within the jewelry industry, the four top respected diamond grading
labs are the Gemological Institute of America, The American Gem
Society, and the European Gemological Society and Professional Gem
Sciences. If you read the fine print of any diamond grading report
you will notice that all the labs have disclaimers which state that
their reports are not quality guarantees. Diamond lab graders grade
diamonds using advanced methods and assess and evaluate their findings
which allow them to be subject to human error. Although we can not
guarantee qualities, we do check all of our diamonds against their
diamond grading reports and reject any that we feel have been graded
inaccurately.