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diamond schools

Guest John Garmann

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There are three critical steps to valuation. First you must identify what the item is and second you must assign a value for how it would be expected to behave in a particular marketplace and third, assuming that you are doing this for more than your own interest, you must write a report about it that will be useful to the reader. These are all fairly different sets of skills and they are not generally taught together. Assuming that you are in the US, some good places to learn valuation theory are:


American Society of Appraisers http://www.appraisers.org

National Association of Jewelry Appraisers http://www.najaappraisers.com

International Society of Appraisers http://www.isa-appraisers.com

American Gem Society http://www.ags.org

The Appraisal Foundation http://www.appraisalfoundation.org


There are several books on the subject with regard to gems and jewelry available from www.amazon.com and similar vendors.

I kind of like this one: http://www.amazon.com/exec/obidos/tg/detai...=books&n=507846


And this one: (it’s out of stock at Amazon but you can get it at www.ags.org )



Gemological training is available from:


Gemological Institute of America http://www.gia.edu

International School of Gemology http://www.schoolofgemology.com

Gem-A http://www.gem-a.com


There are many more and, as with the above, there are lots of good books available on the subject.

This one is great and inexpensive although it’s a little difficult to read. Every gemologist has a copy.



Nothing serves as a substitute for experience and good shopping skills are mandatory.


Writing skills are taught at most universities and community colleges in your neighborhood.


Neil Beaty


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