Colorvision Screening

Colorvision Screening Sign Developed at Columbia University by LeGrand Hardy, MD, Gertrude Rand, PhD, and M. Catherine Rittler, BA, with the assistance of several well-known color vision experts, the HRR 4^th edition Pseudoisochromatic Test for color deficiency screening has improved diagnostic accuracy through the use of updated color vision genetic information and state-of-the-art printing methods. This test will indicate if there is a color perception deficiency that could affect color judgment.

Recommended for all professional appraisers or anyone engaged in the purchase, evaluation, or valuation of colored gemstones or fancy colored diamonds, the Colorvision Screening is a requirement of all Certified Gemologist Appraisers of the American Gem Society.

Colorvision available at American Gem Society Headquarters in Las Vegas. Please contact agseducation@ags.org for a list of scheduled testing or call 866.805.6500 ext 1034 for an appointment.

Shop with an American Gem Society Jeweler

Why shop with an American Gem Society jeweler? That’s easy.

Because they have pledged to protect you, the consumer, they promise fair pricing and honest value on their merchandise. You know what you’re getting.

What else do they promise?

To get and stay educated. Each year they have to re-test to maintain their certification as a Registered Jeweler, Certified Gemologist or Certified Gemologist Appraiser

To have consistent business practices. What this means for you, is that if you shop there today, you can expect a similar atmosphere a year from now. American Gem Society members cannot be a fly-by-night operation. In fact, they have to be in business at least two years to apply for membership. Most American Gem Society members have been in business an average of 60 years!

To abide by Society rules. For you, this means you have an ally on the slim chance something should go wrong. You can contact us, and we will investigate the issue.

When you shop with a jeweler who is not an American Gem Society jeweler, you are shopping alone.

Colorvision Screening

Take Another Look

Shop with an American Gem Society Jeweler