Five questions on lesson 7 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: GIA's D-to-Z scale grades…
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b: The scale is built for diamond's yellow and brown tints.
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Question 2: Why was early moissanite hard to grade on D to Z?
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b: Gray and green hues fall outside the scale's procedures.
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Question 3: A stone stays dark under a long-wave UV lamp. What do you know?
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c: Many diamonds are inert too.
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Question 4: A stone glows medium blue under long-wave UV. Which is more likely?
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a: Blue fluorescence is common in diamond. In GIA's study, the moissanites that reacted glowed orange.
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Question 5: In the simulator, which setting appears for diamond but not for moissanite? What does that tell you about how the model treats moissanite under UV?
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Fluorescence. The model treats moissanite as inert, so it stays dark under the UV lamp.
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