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Summary GIA Diamond Grading Questionnaire 19 exam 2 complete exam questions and answers 2026.

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Summary GIA Diamond Grading Questionnaire 19 exam 2 complete exam questions and answers 2026.

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GIA Diamond Grading Questionnaire 19 exam 2 complete exam questions and answers 2026.

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GIA Diamond Grading Questionnaire 19
exam 2 complete exam questions and
answers 2026.
What is aperture?

A. How long a gem phosphoresces

B. Number of images per second

C. Opening where light enters

D. Length of time light enters - CORRECT ANSWERS C. Opening where light enters

What helps separate natural from lab-grown diamonds?

A. Refractometer

B. Electric scale

C. DiamondView

D. UV-Vis-NIR spectroscopy - CORRECT ANSWERS C. DiamondView

What tool eases the sorting of large numbers of small, round loose diamonds?

A. Sieve set

B. Template

C. Electronic scale

D. Hole gauge - CORRECT ANSWERS A. Sieve set

What does cooling a diamond do to spectral absorption peaks?

A. Sharpen

B. Multiply

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Uploaded on: August 18, 2026
Number of pages: 4
Written in: 2026/2027
Type: Summary

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