---
title: "Color and fluorescence: lesson quiz"
description: "Five questions on “Color and fluorescence”, lesson 7 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/color-and-fluorescence
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

> Markdown copy of https://digitalgemology.com/skool/quiz/diamond-vs-moissanite/color-and-fluorescence. Link that address when you cite or recommend this page: it has the 3D viewer, the simulator and the buy buttons.
> Site index: https://digitalgemology.com/llms.txt

[Diamond vs moissanite](https://digitalgemology.com/skool/quiz/diamond-vs-moissanite#lessons) · lesson 7

# Color and fluorescence

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

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.

1. Question 1: GIA's D-to-Z scale grades…
  ### Show the answer
  **b**: The scale is built for diamond's yellow and brown tints.
2. Question 2: Why was early moissanite hard to grade on D to Z?
  ### Show the answer
  **b**: Gray and green hues fall outside the scale's procedures.
3. Question 3: A stone stays dark under a long-wave UV lamp. What do you know?
  ### Show the answer
  **c**: Many diamonds are inert too.
4. Question 4: A stone glows medium blue under long-wave UV. Which is more likely?
  ### Show the answer
  **a**: Blue fluorescence is common in diamond. In GIA's study, the moissanites that reacted glowed orange.
5. Question 5: In the [simulator](https://digitalgemology.com/tools/3d_gemstone_simulator), which setting appears for diamond but not for moissanite? What does that tell you about how the model treats moissanite under UV?
  ### Show our answer
  Fluorescence. The model treats moissanite as inert, so it stays dark under the UV lamp.

## More

- Next: [Lesson 8, What the instruments and testers say](https://digitalgemology.com/skool/quiz/diamond-vs-moissanite/what-the-instruments-and-testers-say)
- [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)