What is Diamond Certification & which is the best company?

This article compares the different diamond certification options. How do diamonds compare when certified by GIA vs AGS, GIA vs EGL, GIA vs IGI, and GIA vs HRD. read more

Independent certification is your assurance that you're getting a quality diamond that is accurately graded without bias. All Blue Nile loose diamonds have been analyzed and graded for quality by the Gemological Institute of America , one of the most respected and accurate labs in the diamond industry. read more

Diamond Certification (most commonly from labs GIA, AGS, IGI, EGL, GSI, and HRD) is a document you receive from an objective 3rd party lab that describes a diamond in all of its characteristics. Along with each diamond you’re considering, you should receive and review its lab certification. read more

GIA, AGS, EGL and other diamond grading certificates Diamond certificates, or certs, as they are known in the diamond industry, are often called the fifth C, in addition to the well-known 4Cs of diamond stones: carat weight, cut, color, and clarity. read more

Certificate Standards: Another major consideration in diamond certification is the certification standards that the various labs operate by. In order to illustrate this point, one could consider GIA and IGI side by side: GIA is a non-profit organization while IGI is a commercial institution. read more

Diamond Certified is dedicated to defining excellence and identifying the highest quality local companies for Northern California consumers. read more