---
title: "Polish, symmetry and fluorescence: lesson quiz"
description: "Five questions on “Polish, symmetry and fluorescence”, lesson 5 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/polish-symmetry-and-fluorescence
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

> Markdown copy of https://digitalgemology.com/skool/quiz/reading-a-grading-report/polish-symmetry-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

[Reading a grading report](https://digitalgemology.com/skool/quiz/reading-a-grading-report#lessons) · lesson 5

# Polish, symmetry and fluorescence

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

Five questions on lesson 5 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 round has Excellent proportions and Fair symmetry. What's the best GIA cut grade it can get?
  ### Show the answer
  **c**: Fair finish caps the cut at Good.
2. Question 2: Which of these is a symmetry fault?
  ### Show the answer
  **b**: The culet's position is a proportion-related symmetry fault; burn marks and polish lines are polish.
3. Question 3: A report says "Fluorescence: None". Does the stone have no reaction at all to UV?
  ### Show our answer
  Not necessarily: "None" covers indiscernible up to very faint.
4. Question 4: Can a fancy-shaped diamond have polish and symmetry grades at IGI?
  ### Show our answer
  Yes: IGI lists them for every shape and color.
5. Question 5: In the H&A Scope, why can a stone with perfect proportions still show only 85% symmetry?
  ### Show our answer
  Symmetry is about whether the facets match each other. Misaligned mains break the match, even when the angles are right on average.

## More

- Next: [Lesson 6, The clarity plot](https://digitalgemology.com/skool/quiz/reading-a-grading-report/the-clarity-plot)
- [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)