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Grading Proportions Unrivaled Expertise.
  • Exam (elaborations)

    Grading Proportions Unrivaled Expertise.

  • 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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