Gemstone Color Testing

30 May

Gemstone Color Testing

For a gemologist, judging color in gemstones is really a critical part of the job. Yes, there's clarity and those other C's, but color I think is super important. I know for me, when I'm buying gemstones, that's pretty much the first thing I consider. I mean. An amethyst, for example, can be clear as a bell, but it's not the right color, who cares?

It never occurred to me until I read this on National Jeweler that some gemologists may have issues judging color accurately.

My poor dad is colored blind. It is really amazing to see the kinds of clothes he puts together. True, he's a severe case, but even a little trouble distinguishing color and shades can be a big problem for a jeweler.

Luckily, they actually have a test for jewelers and gemologists.

More from National Jeweler: The American Gem Society (AGS) will introduce a new, improved version of its color deficiency screening, designed to identify how well appraisers and jewelers judge color, at the JCK show in Las Vegas.

The Colorvision screening is used to detect color perception deficiencies that could affect color judgment, and is requirement for all of AGS' certified gemologist appraisers. It is also recommended for all professional appraisers or anyone engaged in buying, evaluating or valuing colored gemstones or fancy-colored diamonds

The HRR 4th edition Pseudoisochromatic Test for color deficiency screening provides valuable knowledge for professional appraisers or anyone engaged in the purchase, evaluation or valuation of colored gemstones or fancy colored diamonds.

Related posts:

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  2. Gold & Color Gems “ In” for the Holidays
  3. Good Gemstone Jewelry Advice
  4. Trusting Your Jeweler
  5. Rare Gemstone Discovery

No Responses to “Gemstone Color Testing”

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  2. Tim January 5, 2010 at 11:23 pm #

    Very interested to read that jewellers may have problems judging the colours of gemstones. For us at the problem is photographing our gemstone cufflinks and rings. The light refraction in the stones can give quite diferrent coloursunder diferrent conditions.
    The best lighht seems to be natural sunlight but of course there are times when the sun is not out and the photos must be taken. The worst seems to be th flash light. Maybe it is the sudden intensity of the flash but it can result in very bad representations of the gemstone colours.
    Having said all this of course this is also ine of the delights of working with these natural stones that have been created over centuries and live on above ground in fabulous jewellery creations.

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