---
product_id: 267530708
title: "Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets"
brand: "envistia"
price: "¥2539"
currency: JPY
in_stock: true
reviews_count: 8
category: "Envistia"
url: https://www.desertcart.jp/products/267530708-keychain-magnet-tester-for-gold-silver-jewelry-and-precious-metals
store_origin: JP
region: Japan
---

# Compact 1.57 x 0.47 in size Portable keychain design N40 Neodymium magnet, 2+ lbs pull Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets

**Brand:** envistia
**Price:** ¥2539
**Availability:** ✅ In Stock

## Summary

> 🧲 Unlock the truth behind your metals—carry confidence everywhere!

## Quick Answers

- **What is this?** Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets by envistia
- **How much does it cost?** ¥2539 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/267530708-keychain-magnet-tester-for-gold-silver-jewelry-and-precious-metals)

## Best For

- envistia enthusiasts

## Why This Product

- Trusted envistia brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable & Stylish:** Encased in plated steel housing with a stainless steel split ring for everyday carry.
- • **Compact & Portable:** Slim 1.57 x 0.47 inch size fits effortlessly on your keychain or pocket.
- • **Multi-Metal Testing:** Quickly identify fake gold, silver, brass, bronze, and plated jewelry.
- • **Essential for Professionals:** Ideal for jewelers, coin dealers, recyclers, and vintage collectors to avoid costly mistakes.
- • **Powerful N40 Neodymium Magnet:** Over 2 pounds of pull force for precise metal detection.

## Overview

This Keychain Magnet Tester features a powerful N40 rare earth neodymium magnet with over 2 pounds of pull strength, housed in a durable plated steel casing. Compact and lightweight at just 1.57 x 0.47 inches, it easily attaches to your keys for on-the-go testing of gold, silver, brass, bronze, and other precious metals. Perfect for professionals and enthusiasts alike, it quickly identifies fake or plated jewelry and metals, helping you make informed decisions with confidence.

## Description

This keychain magnet offers strong neodymium magnet power in a handy keychain. They are perfect for jewelers, recyclers, coin dealers, or anyone that needs a convenient, easy-to-carry magnet to test for iron, nickel, or cobalt content. Featuring a durable N40 neodymium magnet housed in a plated metal shell, it has a pull force of over 2 pounds. Determine if jewelry is silver or gold plated by testing if ferrous metals are used as the base metal (excluding some nickel alloys). If a magnet responds to jewelry, it is not fine silver or anything near pure gold. The same is also true of brass and bronze antiques, many are just brass plating over steel or iron. This strong magnet can also be used to determine polished aluminum from stainless steel in most cases, and is very handy for testing industrial metals for recycling.The key magnet features a powerful N40 grade (2 lbs minimum pull strength) neodymium rare earth magnet encased in a plated steel housing for durability and comes with a stainless steel split ring.Product Specifications Type: Neodymium Magnet KeychainMaterial: N40 NeodymiumDimensions: 0.47 inches wide at its widest point x 1.57 inches long (12 x 40 mm)Weight 0.6 oz (18 g)

Review: Great magnet quality- Small and compact. - Small and compact it detects when jewelry is made out of a metal alloy or has any type of metal in it so it is great to determine if jewelry is real or fake.
Review: Love this jewel. - Works well. Simple and convenient.

## Features

- 【Product Size】0.47 x 1.57 inches with N40 Neodymium Magnets; Package: 1 Piece; Pull Power: Over 2 pounds per magnet. This gold testing magnet is the perfect size and strength for identifying fake silver and gold jewelry!
- 【Jewelry & Coin Testing】Identify fake/plated jewelry, which often has steel or nickel alloys as the base material (some alloys, like nickel-silver and German silver are non-magnetic, despite having ferrous metals present). Generally, the magnet test is only the first test performed when verifying the authenticity of coins and jewelry, before density and acid testing.
- 【Precious Metals Testing】Identify/sort chrome plated items from polished aluminum, silver, and non-magnetic grades of stainless steel (chrome plating requires a nickel layer, which is magnetic). Identify and sort solid brass and bronze from steel-plated items (handy in the antique market and hardware store).
- 【Practical Magnetic Keychain】This magnetic keychain is strong, small, light in weight, and easy to carry. You can put it in your pocket or purse when you go out. It provides you with a versatile multi-functional magnetic testing tool.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Closure Type | Split Ring |
| Pattern | Solid |
| Brand | Envistia |
| Item dimensions L x W x H | 1.57 x 0.47 x 0.47 inches |
| Number of Pieces | 1 |
| Style | Brass |
| Shape | Rectangular |
| UPC | 732387205982 |
| Product Dimensions | 1.57 x 0.47 x 0.47 inches |
| Item Weight | 0.704 ounces |
| Department | mens |
| Manufacturer | Envistia Mall |
| ASIN | B08QV75QMX |
| Item model number | Kmt-2023 |
| Is Discontinued By Manufacturer | No |
| Date First Available | December 17, 2020 |

## Product Details

- **Color:** Silver
- **Material:** Aluminum,Brass
- **Theme:** Silver
- **Special Feature:** Magnetic
- **Included Components:** stainless steel split ring

## Images

![Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets - Image 1](https://m.media-amazon.com/images/I/61nirqq5jjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great magnet quality- Small and compact.
*by W***2 on December 6, 2025*

Small and compact it detects when jewelry is made out of a metal alloy or has any type of metal in it so it is great to determine if jewelry is real or fake.

### ⭐⭐⭐⭐⭐ Love this jewel.
*by B***Y on January 11, 2026*

Works well. Simple and convenient.

### ⭐⭐⭐⭐⭐ It definitely works great!
*by P***L on June 7, 2022*

This is definitely a super strong magnet! It works better than the slim bar shaped rare earth magnets I also bought to test some different coins for precious metals content. If you're coin is mostly silver, gold, or copper. This magnet won't attach to it. If it has any significant amount of any kind of steel or aluminum type alloy metals, it will attract to it in a very powerful manner! Between this rare earth magnet, and a pocket pinger. You can have a way to test for precious metals content for less than 35 dollars all together. If that's what you're looking for it's pretty awesome. If you just want a really strong magnet, it's good for that too. So I guess from my experience with this rare earth magnet, I have been pleased with the results. And would recommend it for what I've mentioned. I'm sure there are bigger, stronger magnets. But for the purposes I've mentioned, this one works just fine.

## Frequently Bought Together

- Envistia Mall Keychain Magnet for Testing Gold, Silver, Brass, Precious Metal & Jewelry, Non-ferrous metal verification
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-30*