Five questions on lesson 8 of Reading a grading report. The questions and the answers to pick from come in a new order every time you start.
Pick an answer, and the question marks itself. For a question that you answer in your own words, think of your answer first. Then show our answer and say whether you had it. Nothing is saved or sent.
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Question 1: A color grade reads "E\*". Where do you look next?
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b: The asterisk flags a color treatment, and Comments explains it.
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Question 2: Which of these treated diamonds can get a GIA grading report?
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c: Laser drilling is permanent and disclosed; coating and fracture filling are unstable.
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Question 3: What does "LG" before an IGI report number on the girdle mean?
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The stone is laboratory-grown; IGI inscribes every lab-grown stone it reports that way.
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Question 4: Why can't you tell a lab-grown diamond from a natural one by eye?
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It's diamond in every way that shows: same carbon, same crystal, same optics. The differences need a lab's instruments.
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Question 5: A stone turns out to be cubic zirconia. What kind of GIA report can it get?
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An Identification Report: GIA doesn't grade simulants.
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