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Ideal_Rock
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DECEMBER 10, 2002 - LAS VEGAS -- As of Jan. 1, all American Gem Society Laboratories (AGSL) diamond grading reports will contain updated wording to describe the gem's fluorescence.
The "inert" and "faint" fluorescence descriptors will be combined into a single descriptor, "negligible," which is commonly defined as "not significant or important enough to be worth considering."
The current AGSL fluorescence nomenclature includes five descriptors: "inert," "faint," "medium," "strong" and "very strong." The last three are followed by the color of the fluorescence, which is usually blue in diamond but may also be yellow, orange, red and white.
"Since the appearance of a diamond that is truly inert or exhibits 'faint' fluorescence is not adversely affected in any way, the descriptor 'negligible' is more accurate and more appropriate," said AGSL Director Peter Yantzer. "We feel that this is a very positive and dynamic change."[/u]
The "inert" and "faint" fluorescence descriptors will be combined into a single descriptor, "negligible," which is commonly defined as "not significant or important enough to be worth considering."
The current AGSL fluorescence nomenclature includes five descriptors: "inert," "faint," "medium," "strong" and "very strong." The last three are followed by the color of the fluorescence, which is usually blue in diamond but may also be yellow, orange, red and white.
"Since the appearance of a diamond that is truly inert or exhibits 'faint' fluorescence is not adversely affected in any way, the descriptor 'negligible' is more accurate and more appropriate," said AGSL Director Peter Yantzer. "We feel that this is a very positive and dynamic change."[/u]