---
title: "Culet size: meaning in gemology"
description: "Culet size is the word that a report uses for the size of the culet. The eight words are None, Very Small, Small, Medium, Slightly Large, Large, Very Large…"
url: https://digitalgemology.com/learn/glossary/culet-size
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

> Markdown copy of https://digitalgemology.com/learn/glossary/culet-size. 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

[Glossary](https://digitalgemology.com/learn/glossary) · Anatomy and proportions

# Culet size

Also called culet grade, culet: none

Culet size is the word that a report uses for the size of the culet. The eight words are None, Very Small, Small, Medium, Slightly Large, Large, Very Large and Extremely Large.

## In more detail

None means that there is no culet facet: the mains meet in a point. The smallest sizes are judged by eye at 10x. GIA's cut booklet allows Excellent with a culet of Small or less, and Very Good with Medium. In our Cut Grading Tool, which reads GIA's tables, Extremely Large drops a T73 to Poor.

## On a grading report

On the proportion diagram as a word.

## Related terms

- [Culet](https://digitalgemology.com/learn/glossary/culet): The culet is the bottom point of the pavilion. It can also be a tiny facet, parallel to the table, that keeps the point from chipping.
- [Cut grade](https://digitalgemology.com/learn/glossary/cut-grade): The cut grade rates how well a diamond's proportions and finish work, from Excellent to Poor. GIA gives it only to standard round brilliants in the D-to-Z color range.
- [Proportion diagram](https://digitalgemology.com/learn/glossary/proportion-diagram): The proportion diagram is a side-view profile of the stone, drawn to its measured proportions. It shows the table, depth, crown, pavilion, star and lower half lengths, girdle and culet.

## Learn more

- [The diamond culet: none, pointed or large](https://digitalgemology.com/learn/diamond-anatomy/diamond-culet)
- [How to read the proportion diagram on a diamond report](https://digitalgemology.com/learn/grading-reports/diamond-proportion-diagram)
- [How to read diamond proportions: decode a stone from its numbers](https://digitalgemology.com/learn/diamond-anatomy/how-to-read-diamond-proportions)

[All 328 terms](https://digitalgemology.com/learn/glossary)