Significant painting or digging out can give a diamond what effect?

Prepare for the Gemological Institute of America's Graduate Diamonds Exam. Enhance your expertise with comprehensive quizzes and insightful explanations. Be ready to excel!

Multiple Choice

Significant painting or digging out can give a diamond what effect?

Explanation:
Light performance in a diamond is highly sensitive to surface and internal flaws. When there is significant surface damage—such as deep pits, scratches, or gouges—light that would normally reflect back to the viewer can be scattered or absorbed instead. This disruption creates an unattractive scintillation pattern and can make parts of the stone appear darker. The effect is a reduction in perceived brilliance, not an increase, and surface flaws do not change the diamond’s weight.

Light performance in a diamond is highly sensitive to surface and internal flaws. When there is significant surface damage—such as deep pits, scratches, or gouges—light that would normally reflect back to the viewer can be scattered or absorbed instead. This disruption creates an unattractive scintillation pattern and can make parts of the stone appear darker. The effect is a reduction in perceived brilliance, not an increase, and surface flaws do not change the diamond’s weight.

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