---
product_id: 47886341
title: "– Diamond Tester Pen, Professional Diamond Moissanite Gemstone Tester, Gem Checker Jewelry Gem Selector for Novice and Expert"
brand: "gain express"
price: "VT59576"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/47886341-diamond-tester-pen-professional-diamond-moissanite-gemstone-tester-gem-checker
store_origin: VU
region: Vanuatu
---

# High accuracy testing Compact & portable design Versatile power options – Diamond Tester Pen, Professional Diamond Moissanite Gemstone Tester, Gem Checker Jewelry Gem Selector for Novice and Expert

**Brand:** gain express
**Price:** VT59576
**Availability:** ✅ In Stock

## Summary

> 💎 Unleash Your Inner Gemologist with Precision Testing!

## Quick Answers

- **What is this?** – Diamond Tester Pen, Professional Diamond Moissanite Gemstone Tester, Gem Checker Jewelry Gem Selector for Novice and Expert by gain express
- **How much does it cost?** VT59576 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/47886341-diamond-tester-pen-professional-diamond-moissanite-gemstone-tester-gem-checker)

## Best For

- gain express enthusiasts

## Why This Product

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

## Key Features

- • **🔊 Audible Alerts:** Get instant feedback with a sound indicator for easy reading.
- • **📏 Lightweight & Portable:** Take it anywhere with a sleek design that fits in your pocket.
- • **🔋 Flexible Power Sources:** Use AAA batteries or AC power for ultimate convenience.
- • **🛠️ User-Friendly Operation:** No complicated settings—just point, test, and know!
- • **🔍 Quick & Accurate Identification:** Distinguish real diamonds from fakes in seconds!

## Overview

The Diamond Tester Pen by Gain Express Holdings Ltd. is a portable electronic tool designed for high-accuracy gemstone identification. It can quickly distinguish diamonds and moissanite from imitations, operates on multiple power sources, and features a compact design for easy transport. With a user-friendly interface and audible alerts, this tester is perfect for both professionals and enthusiasts.

## Description

Diamond Tester Pen, Professional Diamond Moissanite Gemstone Tester, Gem Checker Jewelry Gem Selector for Novice and Expert

## Features

- 💎Accurate Stone Identification: Quickly distinguish diamonds and moissanite from fake stones with this tester, ensuring accurate and reliable results.
- 💎User-Friendly Operation: No need to adjust LED bar graphs like other models; this tester simplifies the process. It can identify stones as small as 2pt and features a low battery detector for convenience.
- 💎Versatile Power Options: Use AAA alkaline batteries, NiMH batteries, or an AC power adaptor (not included) to power the tester, providing flexibility and convenience.
- 💎Efficient and Reliable Design: Equipped with an elastic probe tip, built-in metal detector, and an audible "beep" sound indicator, this tester guarantees efficient and precise stone identification. The rubber paint finish offers a comfortable grip.
- 💎Compact and Portable: With a compact size of 173 x 42 x 22mm and a lightweight design (65g without batteries), this tester is easy to carry and use anywhere.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Gain Express Holdings Ltd. |
| Part number | DMT-3 |
| Item Weight | 65 g |
| Product Dimensions | 22 x 5 x 11.99 cm; 65 g |
| Batteries | 3 AAA batteries required. |
| Item model number | DMT-3 |
| Colour | black |
| Style | Compact |
| Power source type | Battery Powered |
| Item Package Quantity | 1 |
| Special Features | Designed for quick, precise, & safe diamond testing. Fine elastic tip probe for testing and stone identify as small as 2pt , Distinguishing real diamonds from fake ones. Emits audible sounds to easily differentiate the readings. |
| Batteries included? | No |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |

## Product Details

- **Brand:** GAIN EXPRESS
- **Power source:** Battery Powered
- **Style:** Compact
- **Colour:** black
- **Item weight:** 65 Grams

## Images

![– Diamond Tester Pen, Professional Diamond Moissanite Gemstone Tester, Gem Checker Jewelry Gem Selector for Novice and Expert - Image 1](https://m.media-amazon.com/images/I/51Ju74IRSGL.jpg)

## Questions & Answers

**Q: where was this made?**
A: Made by Walcom Into, Guangdong, China. From internet search item is not marked

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.vu/products/47886341-diamond-tester-pen-professional-diamond-moissanite-gemstone-tester-gem-checker](https://www.desertcart.vu/products/47886341-diamond-tester-pen-professional-diamond-moissanite-gemstone-tester-gem-checker)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-25*