---
title: "Clarity: eleven grades at 10x: lesson quiz"
description: "Five questions on “Clarity: eleven grades at 10x”, lesson 5 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/clarity
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

> Markdown copy of https://digitalgemology.com/skool/quiz/the-four-cs/clarity. 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 5

# Clarity: eleven grades at 10x

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

Five questions on lesson 5 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's the difference between Flawless and Internally Flawless?
  ### Show the answer
  **b**: FL: nothing at 10x; IF: nothing inside, only surface blemishes.
2. Question 2: How many clarity grades are there, and in how many categories?
  ### Show the answer
  **a**: FL, IF, VVS1, VVS2, VS1, VS2, SI1, SI2, I1, I2, I3.
3. Question 3: Two diamonds each have two inclusions, but one is VVS2 and the other is VS1. What can explain that?
  ### Show the answer
  **b**: The grade looks at size, number, position, visibility and darkness together.
4. Question 4: In the [simulator](https://digitalgemology.com/tools/3d_gemstone_simulator), why does a crystal show as a dark spot, but a feather can flash bright?
  ### Show the answer
  **a**: In the simulator a crystal or pinpoint ends a light path, and a feather reflects part of it.
5. Question 5: Give two reasons why a lab plots the clarity characteristics on a diagram.
  ### Show our answer
  It records the evidence for the grade, and it identifies that particular stone, like a fingerprint.

## More

- Next: [Lesson 6, Cut: the C you see](https://digitalgemology.com/skool/quiz/the-four-cs/cut-the-c-you-see)
- [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)