# Jeweler's loupe and microscope

> The 10x loupe and the gemological microscope are used to examine stones, solder joints and marks; how to use a jeweler's loupe.

- Source: https://www.711grados.com/en/jewelers-loupe-and-microscope/
- Language: en
- Note: This entry was drafted with the help of AI and is pending review by the author.
- Published: 2026-06-19
- Updated: 2026-06-30
- Translation (es): https://www.711grados.com/es/lupa-y-microscopio-de-joyeria/
- Author: Sandra Sánchez
- Site: 711 Grados (https://www.711grados.com/)

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A jewel is examined up close. The jeweler's loupe (10x) is the basic tool for seeing inclusions, prongs and hallmarks.

## 10x loupe

It is the standard for grading diamonds. It is held against the eye and the stone is brought close until in focus.

## Microscope

With more magnification and adjustable lighting, it lets you see inclusions and work with precision (in setting and engraving).

## Visor and head loupes

They leave the hands free to work.

## Care

Clean the lenses with a microfiber cloth and avoid touching them with your fingers.

## How to use the 10x loupe

Hold the loupe **against the eye** and bring the stone (or both toward the face) until it is in focus. Rest your elbows against your body so as not to shake and look under white, diffuse light. Look for inclusions, scratches, chipped edges and worn prongs.

## What is examined

- **Stones:** inclusions, color, symmetry and damage at the girdle.
- **Metal:** hallmarks and stamps ([hallmarks](https://www.711grados.com/en/jewelry-hallmarks-and-stamps/)).
- **Solder joints:** whether there are pores or lines.
- **Settings:** whether the prongs hold well.

## Magnification

10x is the standard for grading diamonds ([the 4Cs](https://www.711grados.com/en/diamond-4cs-cut-color-clarity-carat/)). With more magnification the field and depth of focus decrease, so a microscope is used.

## Care

Clean the lenses with a microfiber cloth, keep it in its case and avoid touching the glass.

## See also

- [The 4Cs of diamonds: cut, color, clarity and carat](https://www.711grados.com/en/diamond-4cs-cut-color-clarity-carat/)
- [Jeweler's scale and caliper](https://www.711grados.com/en/jewelers-scale-and-caliper/)
- [Jeweler's bench and bench pin](https://www.711grados.com/en/jewelers-bench/)