Accredited Gem Appraisers


721 Sansom St.
Lower Level
Phila PA 19106

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About AGA

AGA Guarantees Diamond Grading

diamondWe maintain a strict methodology in our AGA lab environment.

Our guarantee for diamond reports covers color and clarity. There is no more consistent and accurate promise of color grading in the appraisal profession. This covers all versions of AGA Diamond Reports.

AGA reserves the right to withdraw this guarantee or to modify it without notice

For more information, contact AGA: 215-873-CERT or

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