---
title: "Fire: the main optical difference: lesson quiz"
description: "Five questions on “Fire: the main optical difference”, lesson 4 of Digital Gemology's Diamond vs moissanite course, in a new order every time, with an explanation for every answer."
url: https://digitalgemology.com/skool/quiz/diamond-vs-moissanite/fire-the-main-optical-difference
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

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[Diamond vs moissanite](https://digitalgemology.com/skool/quiz/diamond-vs-moissanite#lessons) · lesson 4

# Fire: the main optical difference

Lesson quiz · five questions, in a new order every time

Five questions on lesson 4 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.

1. Question 1: Where does fire come from?
  ### Show the answer
  **b**: Dispersion fans white light into its colors.
2. Question 2: Why does the T73 score the same scintillation in diamond and in moissanite?
  ### Show the answer
  **b**: Same cut, same pattern of facets, same sparkle.
3. Question 3: A friend says their stone "can't be moissanite, it barely shows any color". When could both be true?
  ### Show the answer
  **b**: Fire needs small, bright light sources. Soft light washes it out.
4. Question 4: On the Wheel, which cut gains the most fire when you move it from diamond to moissanite?
  ### Show our answer
  DG-M5: 67 in diamond, 100 in moissanite.
5. Question 5: Diamond's fieriest cuts in our scores are fancy shapes such as the Oval. What do they give up?
  ### Show our answer
  Brilliance: the Oval scores 92 for fire but 47 for brilliance in diamond.

## More

- Next: [Lesson 5, Doubled facets: the loupe test](https://digitalgemology.com/skool/quiz/diamond-vs-moissanite/doubled-facets-the-loupe-test)
- [The Diamond vs moissanite quiz](https://digitalgemology.com/skool/quiz/diamond-vs-moissanite), on the whole course
- [All Diamond vs moissanite lesson quizzes](https://digitalgemology.com/skool/quiz/diamond-vs-moissanite#lessons)
- [Diamond vs moissanite: all the lessons](https://digitalgemology.com/learn/diamond-vs-moissanite)