European Gemological Laboratory
The European Gemological Laboratory (EGL) was founded in Belgium more than 30 years ago. The EGL is committed to protecting the integrity of the jewelry trade and fueling public interest through applied science, innovation, education, and exceptional service.
The EGL is accredited with introducing new approaches to diamond grading, the practice of certifying diamonds measuring less than one carat, and establishing the 'SI3' designation for diamond clarity. The organization is also recognized for conducting advanced research with renowned physicists, geologists, and mineralogists.
Learn more about the diamond reports issued by the EGL below.
Diamond Grading Standards
Before grading a diamond, the EGL thoroughly scrutinizes every facet and detail of the stone. Each diamond is inspected by at least eight expert gemologists. If the judgment of a diamond is not unanimous, senior gemologists further analyze the stone before a grade is assigned.
Carat
Carat weight is measured using calibrated electronic scales. The diamond's proportions, measurements, and facet angles are recorded.
Color
A diamond's color is assessed by a specialized team of gemologists by comparing it to master stones of predetermined color. Specially calibrated lighting is used to illuminate the diamond during analysis.
Clarity
The clarity of a stone is determined by a specialized team of experienced gemologists. Each gemologist independently examines the diamond using a microscope with a minimum of 60x magnification to identify characteristics of clarity and finish. If any inclusions are detected, they are plotted on a diamond diagram.
Polish & Symmetry
Polish and symmetry are evaluated based on a careful inspection of the quality of a diamond's finish and cut.
Fluorescence
The diamond is exposed to long-wave ultraviolet radiation to check for the presence of any amount of fluorescence.
EGL vs. GIA
Although both the EGL and the GIA are internationally reputed gemological laboratories, the GIA has become known for its stricter grading standards when compared to those of the EGL.
Contact the European Gemological Laboratory (EGL)
EGL USA
6 West 48th StreetNew York, New York 10036
Phone: 212-730-7380
Fax: 212-842-5180
www.eglusa.com
Contact the European Gemological Laboratory (EGL)
23 Tuval St.Ramat Gan, Israel 52522
Toll-Free: 888-454-6818
Phone: +972 3-752-8428
Fax: +972 3-751-0047
www.eglinternational.org
Diamond Grading Report
The EGL Diamond Grading Report includes the color, clarity, carat weight, and cut of a diamond. A detailed diagram is used to plot the diamond's proportions and to show any inclusions that are discovered.
Diamond Consultation
An EGL Diamond Consultation includes the information noted on the Grading Report, including shape, carat weight, color, clarity, and measurements, as well as a plotting diagram, in a convenient, pocket-sized document.
