Specializes in origin of color determination for fancy colored diamonds using Raman spectrometer. Offers diamond grading reports and appraisal
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http://www.gemlab.net/
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diamond weight estimators colored stone weight estimators a pearl grader (based on the system developed by the Guide) a diamond cut grading
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http://www.gemologytools.com/
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The 4C’s of diamond grading have never been easier to understand Technology based laboratory grading reports
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http://www.gemworldlabs.com/
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Offers mini and full diamond grading reports and appraisals for the trade. Located in Bellevue Washington
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http://www.globalgemlab.com/
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Careers. ImaGem FAQs Feb 02 2005: ImaGem Invited to Speak at AGA Conference On the Latest Developments in Diamond Cut Grading
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http://www.imageminc.com/
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quality in our grading of diamonds and colored gems. IGL laboratories princess gold benchod diamond
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http://www.dia-lab.com/
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The internet's largest online school of gemology
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http://www.schoolofgemology.com/
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diamond grading information
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http://www.lglab.com/
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Expert Diamond and Jewelry Appraisal That Travels To Your Home Or Office Travel Laboratory For Fast And Accurate Grading includes: Binocular
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http://www.nationalgemologicallaboratory.com/
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gemmology) ruby sapphire jade corundum Burma ruby Kashmir sapphire Burma jade diamonds diamond grading synthetic gems gem
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http://www.ruby-sapphire.com/
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