[Jewelry making - Article 00448] - Re: [Orchid] Clarity grading of diamonds

[David Barzilay Lord of the Rings]

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    Rasesh, I became a Graduate Gemologist at G.I.A. in 1972.  At that
    time, the way one learned diamond grading was by actually DOING it. 

    As far as I know, that is still the ONLY way to learn. 

    You need to take the diamond grading class, OR find someone in India
    who can teach you.  You need to look at HUNDREDS of diamonds...tell
    your teacher what grade you would give it, and compare that with the
    'established' grade. 

    Diamond grading is NOT scientific and quantifiable, it is a matter of
    experience.  Those who do it, often cannot tell you specifically what
    factors led to a decision, only that they 'know' it is XX. 

    Oddly enough, the system works.  Any two graders might differ by one
    grade, but with three people grading one diamond, usually two will
    agree, if not all three. 

David Barzilay
Lord of the Rings
607 S Hill St Ste 850
Los Angeles, CA 90014-1718
213-488-9157


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