Five questions on lesson 9 of Diamond vs moissanite. 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: What does GIA issue for a moissanite?
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b: GIA doesn't grade simulants.
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Question 2: A laboratory-grown diamond graded by GIA is inscribed with…
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b: And since late 2020, the report itself is digital.
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Question 3: A stone's inscription matches a real GIA report for a 1.02 carat E-color natural diamond. The stone weighs 1.02 carats. What else do you check, and why?
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The measurements. At the same weight, a moissanite is about 3% wider, so the measurements won't match the report.
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Question 4: A moissanite comes with a card listing "D color, VVS1". Who could have graded it?
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b: GIA doesn't grade moissanite. IGI has graded one producer's moissanite since 2024, and sellers issue their own cards.
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Question 5: In the simulator, which report line differs between a 1.00 ct T73 diamond and a 1.00 ct T73 moissanite? By how much?
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Measurements: 6.48 – 6.48 × 4.00 mm against 6.67 – 6.67 × 4.12 mm.
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