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15 Cards in this Set
- Front
- Back
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The chart of weight adjustment factors begins to apply when the overall girdle thickness is rated as |
slightly thick |
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An improvable is a diamond that can be repolished to improve its clarity |
to VVS1 or VVS2 |
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A mounting makes it impossible to |
accurately weigh a diamond |
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Calculate the estimated weight of a round brilliant with the following dimensions: Average diameter: 7.25 mm Depth: 5.45 mm Girdle thickness: Very thick |
1.83 |
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The ultimate recutting consideration is |
the potential value of a finished diamond |
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Calculate the estimated weight of a heart-shaped brilliant with the following dimensions: Length: 5.58 mm Width: 5.51 mm Depth: 3.21 mm Girdle thickness: Medium |
0.58 carat |
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To see a diamond’s clarity characteristics that might be hidden by prongs, |
use reflections |
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Accurate weight estimation of a mounted diamond requires |
making adjustments for proportion variations. |
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The setting that makes it most difficult to estimate a stone’s weight is a |
bezel setting with a closed back |
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To find the crown height percentage, you must know the crown angle and |
table percentage |
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A diamond’s recut style is largely determined by |
its original cut |
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Which of the following requires the greatest adjustment to estimated weight? |
thick girdle |
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What is the correct adjustment factor to use when estimating the weight of an emerald-cut diamond with the following dimensions? Length: 8.40 mm Width: 5.59 mm Depth: 2.85 mm |
0.0092 |
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When you color grade a mounted diamond, |
hold its table beside the masterstone's without letting the two stones touch |
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When estimating the weight of very small diamonds, graders |
often use templates |
