What is a “Certified Diamond”?


Buying a certified diamond gives you the confidence to know your diamond has been analyzed and graded by a trusted, independent gem laboratory to ensure its authenticity and quality. Certification is a formal evaluation of a diamond and includes a grading report that details the quality characteristics of the stone. However, keep in mind that certification just reports on the quality of the diamond and is not necessarily saying it is a “quality diamond”. This is why it is important to buy from a reputable jeweler, and why as a consumer you need to educate yourself on how to buy a diamond.

A certified diamond may cost a little bit more, but the protection to your investment is well worth it, especially if you intend to buy a larger carat weight diamond. GIA, AGS, Forevermark, and EGL USA are some of the most respected labs and their grading reports provide scientifically accurate evaluations on a diamond’s shape and the 4Cs – cut, color, clarity, and carat weight.

The documentation also gives information on the proportions, which affects how well the diamond refracts the light to create the sparkle, brilliance and scintillation of the stone. In addition, the report states the finish of the diamond and if there is any known treatment on the diamond. Laboratories such as GIA, one of the most respected grading institutions, offer optional laser inscriptions that inscribe the diamond’s report number on the diamond’s girdle or other customized messages for easy identification.

At Padis Jewelry, we have at least 10,000 diamonds in stock at any one time. Our exquisite diamonds come with an independent grading report from US-based labs such as the GIA, AGS, Forevermark and EGL USA. We also have two GIA Graduate Gemologists on staff at all times, and are a proud, accredited member of the American Gem Society (AGS).

Since 1974, Padis Jewelry has been a trusted source for buying exquisite certified loose diamonds, engagement rings and fine jewelry. We are one of the only jewelers in the area that offers such an exclusive selection of top names in the industry as well as such a large inventory. If you are a lover of beautiful jewels, please schedule at visit to San Francisco’s finest jewelry showrooms.


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