Certificate

Diamond Grading Report

Certificate | DIAGO

Third party certification

The certificate is a must for every polished diamond and practically their worldwide passport. It must be internationally recognized and document the quality and identity of each diamond.

The Gemological Institute of America (GIA) is considered the highest authority in the world when it comes to the evaluation and grading of diamonds.

At DIAGO, each rough diamond is strictly checked for authenticity and conflict-free provenance. Once grinded and polished, all diamonds are sent to GIA for a comprehensive evaluation and certification.

The quality of the certificate is decisive for the price as well as for the later resale.

In addition to the 4Cs, other attributes such as polish, proportions, fluorescence and possible comments in the Diamond Grading Report are relevant to the price.

The report number appears microscopically engraved on the girdle of the diamond; giving buyers a unique way of linking their GIA report to the diamond itself.

Third party certification | DIAGO

Facts & Figures

The history of gold

Gold is an important part of a diversified portfolio. In order to fully understand its value, one must look back to the start of the gold market.

Dive into the history of gold

The 4Cs of diamonds

Two diamonds of the same size may appear identical to the naked eye. However, they each could have a very different value upon closer examination.

Discover all 4Cs and become an expert

Gold's value over time

View the historical gold prices via our price history chart and stay informed with the current gold spot prices.

Gold that you can rely on