---
title: "Crown angle and crown height: lesson quiz"
description: "Five questions on “Crown angle and crown height”, lesson 4 of Digital Gemology's Anatomy of a diamond course, in a new order every time, with an explanation for every answer."
url: https://digitalgemology.com/skool/quiz/anatomy-of-a-diamond/crown-angle-and-crown-height
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

> Markdown copy of https://digitalgemology.com/skool/quiz/anatomy-of-a-diamond/crown-angle-and-crown-height. 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

[Anatomy of a diamond](https://digitalgemology.com/skool/quiz/anatomy-of-a-diamond#lessons) · lesson 4

# Crown angle and crown height

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

Five questions on lesson 4 of Anatomy of a diamond. 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 crown angle measure?
  ### Show the answer
  **a**: The bezels' slope, measured from the girdle plane.
2. Question 2: You make the crown steeper at the same table. What happens to the crown height?
  ### Show the answer
  **b**: The same ring, at a steeper slope, rises higher.
3. Question 3: The T73 at a 36.5° crown is Very Good, but 36.5° is inside the Excellent angle range. Why?
  ### Show the answer
  **a**: About 17.5%, past the Excellent limit of 17.0%.
4. Question 4: Which part of the stone spreads white light into fire on its way out?
  ### Show the answer
  **b**: The sloped crown facets bend each color differently.
5. Question 5: A 31.5° crown grades Very Good with the T73's pavilion. What could make it Excellent?
  ### Show our answer
  A steeper pavilion, 41.2° to 41.8°: crown and pavilion are graded together.

## More

- Next: [Lesson 5, Pavilion angle and pavilion depth](https://digitalgemology.com/skool/quiz/anatomy-of-a-diamond/pavilion-angle-and-pavilion-depth)
- [The Anatomy of a diamond quiz](https://digitalgemology.com/skool/quiz/anatomy-of-a-diamond), on the whole course
- [All Anatomy of a diamond lesson quizzes](https://digitalgemology.com/skool/quiz/anatomy-of-a-diamond#lessons)
- [Anatomy of a diamond: all the lessons](https://digitalgemology.com/learn/diamond-anatomy)