AIJOJUMY 2-Pack 12 mm Keychain Magnets for Metal Testing with Velvet Pouch

The compact 12 mm magnet helps you quickly sort magnetic, iron-based items from non-magnetic metals while you’re handling jewellery or scrap. Each magnet attaches to a key ring for handy access on the go. The set includes two magnets and a black velvet pouch for storage.

What matters most

These keychain magnets are designed to show whether an item responds to magnetic attraction. That makes them useful for a quick first check when sorting jewellery, plated pieces, scrap metal or antiques: iron-based materials are magnetic, while materials such as gold, silver, copper and aluminium are generally non-magnetic. The response is a sorting aid, not a confirmation of a piece’s metal content or precious-metal purity.

With two magnets in the set, you can keep one with your everyday keys and place the other in a bag or toolbox. The included black velvet pouch gives you a dedicated place to store the magnets between uses. Compared with carrying bulkier testing equipment for a quick magnetic check, this keychain format is easy to bring along for shopping, sorting or workbench tasks.

Size & fit

Each magnet measures 12 mm in diameter and 40 mm in height. Its keychain format is made for carrying with keys, a backpack or a belt loop, so it can stay close at hand when you need to check an item. The set comes in silver, with a black velvet pouch for storage.

For example, an antique buyer can carry one while visiting a market and use it to check whether a metal fitting is attracted to the magnet. A recycler or jewellery dealer can keep the second one at a sorting area, making a quick magnetic check available in two places. The magnets can also act as magnetic hooks on suitable ferrous surfaces, such as a refrigerator, tool cabinet or iron shelf, for hanging keys or small tools.

How to use it

Bring the magnet close to the item and observe whether it attracts. Attraction can help identify magnetic, iron-based material in a mixed batch, no attraction is consistent with many non-magnetic metals, including gold, silver, copper and aluminium. Since different metals can share the same magnetic response, use the result as a preliminary sorting check rather than proof of what an item is made of.

Keep the magnet on a key ring for travel or at a work area for routine sorting. When it’s not in use, store it in the included pouch to help protect it and keep it together. On a ferrous surface, the magnet can also hold small items such as keys or tools.

Before you decide

What can these magnets help test? They can help distinguish magnetic, iron-based materials from non-magnetic materials. This is useful for a quick check of jewellery, plated items, scrap and other metal objects, but does not establish metal purity.

Can I carry one with my keys? Yes. Each magnet is designed as a keychain magnet and can be attached to a key ring, backpack or belt loop for convenient access.

What comes in the set? The set includes two 12 mm keychain magnets and one black velvet pouch for storage.

Is it worth it?

For jewellery dealers, antique buyers, recyclers and hobbyists who need a portable magnetic check, this set offers two carry-ready magnets for use in different places. Its practical advantage is straightforward: keep a quick way to sort magnetic items close by, whether you’re travelling, working at a bench or organizing metal objects at home.