Not all diamond certifications carry equal weight. When a Chicago jewelry store tells you a diamond is certified, understanding which laboratory issued that certification matters significantly to the value of the piece you are buying. GIA, the Gemological Institute of America, is the most widely recognized and respected independent grading laboratory in the diamond industry. GIA established the standardized four Cs grading system that the industry uses globally. A GIA certificate provides the most rigorous and consistent independent assessment available for diamond quality. AGS, the American Gem Society, is another highly respected laboratory with particular expertise in cut grading. AGS developed its own optical performance analysis that many industry professionals consider the most thorough available assessment of a diamond\'s light performance.
dimend SCAASI | 5 S Wabash Ave STE 1734, Chicago, IL 60603 | +1 312-857-1700


