Accredited Gem Laboratory:
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The American Gem Society Accredited Gem Laboratory -
Professional Gemological Identification Services
The American Gem Society Accredited Gem Lab is a special designation awarded to select members that have met the strict requirements listed below:
A permanent designated laboratory space
Diamond scales that measure carat weight to 0.002 carat accuracy
Binocular microscope with at least 10X magnification
Proportion grading device to measuring diamonds
Leveridge gauge or millimeter gauge for measuring diamonds and color gemstones
Diamond grading light source for evaluating diamond color
Master Color Comparison diamonds for evaluating diamond color
Refractometer – testing of color gemstones
Polariscope – testing of color gemstones
Dichroscope – testing of color gemstones
Long wave and short wave UV light source – testing of diamonds and color gemstones
Specific gravity liquids or scale attachment – testing of color gemstones
A gemological reference library – source of information regarding the identification, evaluation and valuation of diamonds and color gemstones
AND
A Certified Gemologist® or Certified Gemologist Appraiser American Gem Society® on staff to oversee the proper use of the equipment and library.
