---
title: "Comments, treatments and origin: lesson quiz"
description: "Five questions on “Comments, treatments and origin”, lesson 8 of Digital Gemology's Reading a grading report course, in a new order every time, with an explanation for every answer."
url: https://digitalgemology.com/skool/quiz/reading-a-grading-report/comments-treatments-and-origin
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

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[Reading a grading report](https://digitalgemology.com/skool/quiz/reading-a-grading-report#lessons) · lesson 8

# Comments, treatments and origin

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

Five questions on lesson 8 of Reading a grading report. 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: A color grade reads "E\*". Where do you look next?
  ### Show the answer
  **b**: The asterisk flags a color treatment, and Comments explains it.
2. Question 2: Which of these treated diamonds can get a GIA grading report?
  ### Show the answer
  **c**: Laser drilling is permanent and disclosed; coating and fracture filling are unstable.
3. Question 3: What does "LG" before an IGI report number on the girdle mean?
  ### Show our answer
  The stone is laboratory-grown; IGI inscribes every lab-grown stone it reports that way.
4. Question 4: Why can't you tell a lab-grown diamond from a natural one by eye?
  ### Show our answer
  It's diamond in every way that shows: same carbon, same crystal, same optics. The differences need a lab's instruments.
5. Question 5: A stone turns out to be cubic zirconia. What kind of GIA report can it get?
  ### Show our answer
  An Identification Report: GIA doesn't grade simulants.

## More

- Next: [Lesson 9, Read a whole report](https://digitalgemology.com/skool/quiz/reading-a-grading-report/read-a-whole-report)
- [The Reading a grading report quiz](https://digitalgemology.com/skool/quiz/reading-a-grading-report), on the whole course
- [All Reading a grading report lesson quizzes](https://digitalgemology.com/skool/quiz/reading-a-grading-report#lessons)
- [Reading a grading report: all the lessons](https://digitalgemology.com/learn/grading-reports)