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AMERICAN GEM SOCIETY LABORATORIES
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42
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SCIENTIFICALLY BRILLIANT.
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THE SCIENCE OF SCINTILLATION
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42
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AGS LABORATORIES
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AMERICAN GEM SOCIETY LABORATORIES
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DIAMOND QUALITY
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United States Patent and Trademark Office
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SETTING THE HIGHEST STANDARD FOR DIAMOND GRADING
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42
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AGS GEMOLOGICAL LABORATORIES
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42
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United States Patent and Trademark Office
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42
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2009-12-15
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2020-07-17
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historic |
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AGS LABORATORIES SETTING THE HIGHEST STANDARD FOR DIAMOND GRADING
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42
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2020-06-12
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historic |
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THE #1 LAB FOR CUT
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United States Patent and Trademark Office
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42
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2013-07-26
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historic |
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AMERICAN GEM SOCIETY LABORATORIES
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United States Patent and Trademark Office
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42
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1999-08-10
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2010-03-14
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historic |
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