---
product_id: 267530708
title: "Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets"
brand: "envistia"
price: "493395₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Envistia"
url: https://www.desertcart.vn/products/267530708-keychain-magnet-tester-for-gold-silver-jewelry-and-precious-metals
store_origin: VN
region: Vietnam
---

# 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:** 493395₫
**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?** 493395₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/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: Jewel of an item - Works great for testing jewelry. Always carried with my when checking items yo purchase. Small, easy to carry works to help identify real or plated jewelry.
Review: That it was easy to use - It’s very easy to use and some jewelry that I had bought that I thought was not silver. I did the test with the magnet and it did not stick to it so you know that that’s one good thing and then with the polishing cloth it turns black and they say when that happens it’s because it’s real silver so some of my cheap stuff that I didn’t think was Sterling silver is so that’s good because I only wear sterling silver

## 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 |
|---------------|-------|
| ASIN | B08QV75QMX |
| Additional Features | Magnetic |
| Age Range Description | Adult |
| Best Sellers Rank | #62,630 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #38 in Jewelry Gold Testers |
| Brand Name | Envistia |
| Closure Type | Split Ring |
| Color | Silver |
| Customer Reviews | 4.6 out of 5 stars 889 Reviews |
| Fit to Size Sentiment | Good Fit |
| Garment Size Country | United States |
| Included Components | stainless steel split ring |
| Item Dimensions | 1.57 x 0.47 x 0.47 inches |
| Item Shape | Rectangular |
| Manufacturer | Envistia Mall |
| Manufacturer Part Number | JM-MAG-0004 |
| Material Type | Aluminum,Brass |
| Number of Pieces | 1 |
| Pattern | Solid |
| Product Style | Brass |
| Shoulder to Bottom Hem Length | 40 Millimeters |
| Size | Small |
| Style Number | Kmt-2023 |
| Theme | Silver |
| UPC | 732387205982 |
| Unit Count | 1 Count |

## Product Details

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

## 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)
![Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets - Image 2](https://m.media-amazon.com/images/I/41StdVJLeFL.jpg)
![Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets - Image 3](https://m.media-amazon.com/images/I/41V7hOVbSNL.jpg)
![Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets - Image 4](https://m.media-amazon.com/images/I/31iw5vR7R8L.jpg)
![Keychain Magnet Tester for Gold, Silver, Jewelry & Precious Metals with Rare Earth Neodymium Magnets - Image 5](https://m.media-amazon.com/images/I/31DMJDMjf0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Jewel of an item
*by A***R on April 16, 2026*

Works great for testing jewelry. Always carried with my when checking items yo purchase. Small, easy to carry works to help identify real or plated jewelry.

### ⭐⭐⭐⭐⭐ That it was easy to use
*by M***A on February 22, 2026*

It’s very easy to use and some jewelry that I had bought that I thought was not silver. I did the test with the magnet and it did not stick to it so you know that that’s one good thing and then with the polishing cloth it turns black and they say when that happens it’s because it’s real silver so some of my cheap stuff that I didn’t think was Sterling silver is so that’s good because I only wear sterling silver

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

Works well. Simple and convenient.

## Frequently Bought Together

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-17*