---
title: "Crown height: meaning in gemology"
description: "Crown height is the height of the crown, from the girdle to the table. It is a percentage of the average diameter."
url: https://digitalgemology.com/learn/glossary/crown-height
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

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

# Crown height

Crown height is the height of the crown, from the girdle to the table. It is a percentage of the average diameter.

## In more detail

It follows from the table and the crown angle: half of (100% − table) × the tangent of the crown angle. For the T73's 53% table and 34.5° crown, that is about 16%. GIA's Excellent limit for crown height alone is 12.5% to 17.0%.

## On a grading report

On the proportion diagram as a percentage. IGI's Ideal band is 13 to 16.5%.

## Related terms

- [Crown angle](https://digitalgemology.com/learn/glossary/crown-angle): The crown angle is the slope of the bezel facets, measured against the plane of the girdle.
- [Table size](https://digitalgemology.com/learn/glossary/table-size): Table size is the width of the table as a percentage of the average diameter.
- [Total depth](https://digitalgemology.com/learn/glossary/total-depth): Total depth is the height of a stone from table to culet as a percentage of its average diameter. It equals crown height + girdle thickness + pavilion depth.
- [Crown](https://digitalgemology.com/learn/glossary/crown): The crown is the part of a cut stone above the girdle. On a standard round brilliant it has 33 facets: the table, 8 stars, 8 bezels and 16 upper halves.

## Learn more

- [Crown angle and crown height in a round diamond](https://digitalgemology.com/learn/diamond-anatomy/diamond-crown-angle)
- [Diamond measurements explained: diameter, depth and percentages](https://digitalgemology.com/learn/diamond-anatomy/diamond-measurements-explained)

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