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Jewelry, Gems, & Minerals/Minor details of polish and yet remain excellent


Dear Thomas,
I have a GIA certificate stating my diamond has "minor details of polish" and yet the polish is rated as "excellent". How is that possible that the polish is excellent (instead of "very good", for example) even with minor details of polish?

Choo, this "minor detail" is something a skilled appraiser would need to show you using a microscope.   
Typically, the effectiveness of a cut and polish results in the best brightness, fire and scintillation.   "Perfect" is not part of the grade as far as I know and Excellent does allow very slight room for minor details which obviouslyi do not affect those characteristics in the first of this paragraph.  The diamond is polished so well that it exceeds the "very good" and to grade it "very good" would do a disservice to the polish it has.

There is slight allowances in grading. Considering that people are doing that grade assignment, some slight allowancews are needed.  GIA generally grades rather strictly.   Another grader using another system might very well grade it higher than excellent or make no mention whatever of minor details.  I likely have not explained this well but do hope it makes sense.

I am no longer in the grading business and have been out of that area for some years now.

God Blessings to all.  Thomas.  

Jewelry, Gems, & Minerals

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Have a question about jewelry repair or working with precious metal jewelry and gemstones? For many years up to December 31, 2010, I was a working professional bench jeweler, involved everyday with setting stones in mountings, designing and making jewelry, repairing and limited custom manufacture. If you work with jewelry as a hobby or as a profession, I might be able to help. I deal with the retail business, not mass production. Ask privately if you wish. See the box for that: It keeps your question between us. Please DO NOT ask MAKER'S MARKS, but metal quality marks are fine to ask. Please DO NOT ask diamond prices. See a gemologist for that.


I have extensive experience in design, service and making of jewelry. I deal mostly with precious metals and gemstones but work with many materials as needed and usable to create an artistic design. My experience also includes freelance photography and photographer of jewelry and similar items for a former employer and individuals. Design of custom items requires reading the desires of the client and being clear on what can be done within that framework...then fulfilling the transition of idea to reality. Effective communications is essential in a working designer/producer and customer relationship.

Education is English/Physics! Started in human resources, to advertising, to, what a road. I have had formal training in jewelry work and many shared experiences with top grade jewelers. We just never know were we will go or be. Follow your best, your dreams, with some discretion! Don't let the work tear up your body along the way as it has mine.

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