Five questions on lesson 8 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: A stone reads "over the limit" on a refractometer. It could be…
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b: All three are above the 1.81 liquid.
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Question 2: A round stone stays dark as you turn it face-down in a polariscope. Can you say it's diamond?
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b: Straight down its axis, moissanite doesn't split light.
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Question 3: A thermal tester beeps "diamond". What do you know?
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b: Moissanite conducts heat like diamond.
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Question 4: An electrical tester says "moissanite" for a blue stone. What's the right next step?
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b: An electrical reading isn't diagnostic on its own.
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Question 5: In the Polariscope, set diamond with strain, then moissanite at 90° tilt. Describe how each stone goes dark as it turns.
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Diamond with strain: the patches go dark at different turns, so the stone never goes fully dark. Moissanite across its axis: the whole stone goes dark at once, four times a turn.
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