---
title: "Gem Cut Studio: meaning in gemology"
description: "Gem Cut Studio is a faceting design and ray-tracing program for Windows and macOS. It opens GemCad .asc files directly, and its own design files end in .gcs."
url: https://digitalgemology.com/learn/glossary/gem-cut-studio
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

> Markdown copy of https://digitalgemology.com/learn/glossary/gem-cut-studio. 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) · Cutting and files

# Gem Cut Studio

Also called .gcs

Gem Cut Studio is a faceting design and ray-tracing program for Windows and macOS. It opens GemCad .asc files directly, and its own design files end in .gcs.

## In more detail

It adds tools for tilt performance, light paths and yield. It can also export a design as OBJ or STL.

## How we measure it

Our tools read your own .gcs files.

## Related terms

- [GemCad .asc](https://digitalgemology.com/learn/glossary/gemcad-asc): GemCad is Robert Strickland's faceting design program for Windows, and .asc is its text design format. An .asc file gives the gear, the refractive index and every facet's angle and index.
- [Cutting file](https://digitalgemology.com/learn/glossary/cutting-file): A cutting file is a faceting design: every facet's angle and index, in cutting order, for a faceting machine. It tells a faceter how to cut the stone.
- [Measure your own stone](https://digitalgemology.com/learn/glossary/measure-your-own-stone): “Measure your own stone” lets three of our tools measure your own cutting file or 3D model. They use the same code and settings as for our cuts.

## Learn more

- [Who uses our files](https://digitalgemology.com/about/files)
- [Your own file](https://digitalgemology.com/about/how-we-measure/your-own-file)

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