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Exam (elaborations)
Grading Proportions Unrivaled Expertise.
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---2January 20242023/2024A+
- Table gauge 
An advantage of the face-up method of crown-angle estimation is that it 
Can be used with mounted diamonds. 
What is the crown height percentage of a diamond with a crown angle of 32 degrees and a 
60 percent angle? 
12.5 percent. 
An extremely thick girdle: A. makes a stone easier to set, B. Creates an unattractive fish eye 
effect, C. Reduces a stones durability during normal wear, D. Adds weight without 
contributing to the stones appearance 
D. 
Most round brilliants have table ...
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