---
title: "Color: D to Z: lesson quiz"
description: "Five questions on “Color: D to Z”, lesson 3 of Digital Gemology's The four Cs course, in a new order every time, with an explanation for every answer."
url: https://digitalgemology.com/skool/quiz/the-four-cs/color-d-to-z
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

> Markdown copy of https://digitalgemology.com/skool/quiz/the-four-cs/color-d-to-z. 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

[The four Cs](https://digitalgemology.com/skool/quiz/the-four-cs#lessons) · lesson 3

# Color: D to Z

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

Five questions on lesson 3 of The four Cs. 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: What does the D-to-Z scale measure?
  ### Show the answer
  **b**: It measures the tint, from colorless to light yellow or brown.
2. Question 2: Why does GIA grade color against master stones in a standard environment?
  ### Show the answer
  **a**: The same stone can look whiter or warmer in different light.
3. Question 3: Which range does an H fall in?
  ### Show the answer
  **b**: G to J is near colorless.
4. Question 4: In the [simulator](https://digitalgemology.com/tools/3d_gemstone_simulator), you put a D and an H under the Restaurant lighting, and you can't tell them apart. Why?
  ### Show the answer
  **b**: The warmth of the light is stronger than the faint tint of the stone.
5. Question 5: Is a Z a "bad" diamond?
  ### Show our answer
  No. It has a tint that you can see, and some people choose it for exactly that.

## More

- Next: [Lesson 4, Beyond Z: fancy color and fluorescence](https://digitalgemology.com/skool/quiz/the-four-cs/beyond-z-fancy-color-and-fluorescence)
- [The The four Cs quiz](https://digitalgemology.com/skool/quiz/the-four-cs), on the whole course
- [All The four Cs lesson quizzes](https://digitalgemology.com/skool/quiz/the-four-cs#lessons)
- [The four Cs: all the lessons](https://digitalgemology.com/learn/four-cs)