# Ultrasonic machine for jewelry

> The ultrasonic machine cleans jewelry with vibrations in a liquid; frequency, solutions, times and which pieces must not go in.

- Source: https://www.711grados.com/en/ultrasonic-machine-for-jewelry/
- Language: en
- Note: This entry was drafted with the help of AI and is pending review by the author.
- Published: 2026-07-11
- Updated: 2026-07-16
- Translation (es): https://www.711grados.com/es/maquina-de-ultrasonidos-para-joyeria/
- Author: Sandra Sánchez
- Site: 711 Grados (https://www.711grados.com/)

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The ultrasonic machine is a tank with a transducer that produces high-frequency waves. In the liquid they form tiny bubbles that dislodge dirt.

## How it is used

Fill the tank with water and a mild cleaner, lower the piece in a basket and run for 2 to 5 minutes.

## Frequency and heating

The most common work at 40 kHz. A heater speeds up the cleaning.

## What not to put in

Pearls, opals, turquoise, treated emeralds, pieces with glued stones and costume jewelry. See [when to use ultrasonic](https://www.711grados.com/en/ultrasonic-jewelry-cleaner-when-to-use/).

## Maintenance

Change the liquid regularly and dry the tank.

## Step by step

1. Fill the tank with warm water and a few drops of mild cleaner.
2. Place the jewel in the basket, not touching the walls.
3. Run for 2 to 5 minutes.
4. Take the piece out, rinse with clean water and dry with a cloth.

## Which pieces can be cleaned

Gold, silver, platinum and most firmly set diamonds, rubies and sapphires. Check beforehand that there are no loose stones: the vibration can dislodge them.

## Which pieces cannot

Pearls, opals, turquoise, oil-treated emeralds, fractured stones, glued pieces and costume jewelry. See [when to use ultrasonic](https://www.711grados.com/en/ultrasonic-jewelry-cleaner-when-to-use/) and [how to clean pearls](https://www.711grados.com/en/how-to-clean-pearls/).

## Maintenance

Change the liquid often, do not rest the jewel directly on the bottom and never run the machine empty.

## See also

- [Ultrasonic jewelry cleaner: when to use it and when not to](https://www.711grados.com/en/ultrasonic-jewelry-cleaner-when-to-use/)
- [How to clean gold jewelry at home](https://www.711grados.com/en/how-to-clean-gold-jewelry/)
- [How to clean jewelry with gemstones](https://www.711grados.com/en/how-to-clean-gemstone-jewelry/)