Richard Sherwood
Ideal_Rock
- Joined
- Sep 25, 2002
- Messages
- 4,924
Dave, do you use the AGA cut charts when grading the cut on Old European Cuts and Old Mine Cuts?
I've started using your cut grade system in my appraisals over the last six months or so. Very helpful, especially with dealers. They don't tend to argue so much about the grade once they see there is definitive cut grade parameters.
What I'm wondering specifically is this-
Every once in a while I'll enounter an Old European Cut which has a great "look", but falls in the 4A or 4B category. Prior to using your system, I graded cut on my own scale of Exceptional, Very Good, Good, Fair & Poor, sometimes using split grades. A stone like this I might have graded with a "Good" or "Good to Very Good" cut, followed by the comment "in context of era cut". Using the AGA system, the stone would fall in the "below average" category.
How do you handle this? Do you make a comment regarding it, or grade the OEC's any differently?
Rich, GG
Sarasota Gemological Laboratory
PS- You might find it interesting that my "instinctive cut grading" seemed to closely follow your AGA parameters. When analyzing my instinctive grading against your charts, it seemed to correlate like so:
Exceptional................1A
Very Good to Exceptional...1B
Very Good..................2A
Good to Very Good..........2B
Good.......................3A
Fair to Good...............3B
Fair.......................4A
Poor.......................4B
I've started using your cut grade system in my appraisals over the last six months or so. Very helpful, especially with dealers. They don't tend to argue so much about the grade once they see there is definitive cut grade parameters.
What I'm wondering specifically is this-
Every once in a while I'll enounter an Old European Cut which has a great "look", but falls in the 4A or 4B category. Prior to using your system, I graded cut on my own scale of Exceptional, Very Good, Good, Fair & Poor, sometimes using split grades. A stone like this I might have graded with a "Good" or "Good to Very Good" cut, followed by the comment "in context of era cut". Using the AGA system, the stone would fall in the "below average" category.
How do you handle this? Do you make a comment regarding it, or grade the OEC's any differently?
Rich, GG
Sarasota Gemological Laboratory
PS- You might find it interesting that my "instinctive cut grading" seemed to closely follow your AGA parameters. When analyzing my instinctive grading against your charts, it seemed to correlate like so:
Exceptional................1A
Very Good to Exceptional...1B
Very Good..................2A
Good to Very Good..........2B
Good.......................3A
Fair to Good...............3B
Fair.......................4A
Poor.......................4B
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