Issues related to diamond grading (cut, color, clarity, etc), pricing, and settings. Please post only natural diamond related questions and information here.
Would suggest calling Macys and that independent appraiser that I found on Appraisers and see if they can run a Sarin for you. The Sarin will have the data you are looking for. But not everyone has a Sarin.
Good luck!
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"Insanity: doing the same thing over and over again and expecting different results."
International Gemmological Institute (IGI) would probably do it for a reasonable fee of five dollars or something like that... For a little more they would probably verify the diamond for you as well... Macy's? We shudder to think