---
product_id: 255063682
title: "GAIN EXPRESS Jeweler High Accuracy Diamond Tester with Ultraviolet UV Light, Professional Portable Gemstone Jewelry Gems Tool"
brand: "gain express"
price: "41559 Ft"
currency: HUF
in_stock: true
reviews_count: 6
category: "Gain Express"
url: https://www.desertcart.hu/products/255063682-gain-express-jeweler-high-accuracy-diamond-tester-with-ultraviolet-uv
store_origin: HU
region: Hungary
---

# Ultraviolet UV light for fluorescence test 25 sec probe warm-up, 5 hrs continuous use Multi-level volume calibration for stone size GAIN EXPRESS Jeweler High Accuracy Diamond Tester with Ultraviolet UV Light, Professional Portable Gemstone Jewelry Gems Tool

**Brand:** gain express
**Price:** 41559 Ft
**Availability:** ✅ In Stock

## Summary

> 💎 Spot the real sparkle before anyone else does!

## Quick Answers

- **What is this?** GAIN EXPRESS Jeweler High Accuracy Diamond Tester with Ultraviolet UV Light, Professional Portable Gemstone Jewelry Gems Tool by gain express
- **How much does it cost?** 41559 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/255063682-gain-express-jeweler-high-accuracy-diamond-tester-with-ultraviolet-uv)

## 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

- • **Complete Pro Kit:** Includes vinyl pouch, testing platform & manual for seamless use
- • **Rapid & Reliable Results:** Get accurate diamond authenticity in seconds
- • **Compact & Power-Efficient:** Lightweight design with low battery consumption for on-the-go pros
- • **Precision Calibration Control:** Adjust volume to perfectly match any stone size
- • **Fluorescence Detection Mastery:** UV light reveals hidden gem secrets instantly

## Overview

The GAIN EXPRESS Jeweler Diamond Tester is a professional-grade, portable tool designed to quickly and accurately distinguish authentic diamonds from simulants using advanced UV fluorescence technology and multi-level volume calibration. Compact and efficient, it supports continuous use for up to 5 hours and comes with essential accessories, making it the go-to choice for retail jewelers and pawn brokers seeking reliable gem verification.

## Description

This diamond selector doesn't react on stones like fake crystals, or simulants such as cubic zirconium, when the probe touches the surface. It is the easiest answer for the vast majority of retail jewelers, pawn brokers, and chain stores when faced with the decision of which diamond selector to buy. Why? Because it works reliably and shares the most advanced diamond selector technology on the market.Features:Equipped with ultraviolet light to test the fluorescent reaction of stonesFlexible calibration with multi Level Volume to match different sizes of stonesAn option to use or connect with an A/C adaptor (not included) for long time indoor useMost compact design and low battery consumptionEmit audible sounds to give a warning buzzer if the probe touches a metal surfaceThe audible and visual indicators of genuine diamondWith a single press of a button, it can accurately and precisely: Distinguishes authentic diamond from all models of diamond simulants and metalsDistinguish stones as small as 2ptSupplied with a vinyl pouch, a testing platform for loose stones, and a comprehensive instruction manualBrand new and unusedSpecifications:Probe Warm-up Time: about 25secWorking Time: about 5 hours for continuous useSuggested Working Temperature: 18°C to 30°CWorking Voltage: 1 x 9V, 6F22 battery (included the set) or AC adaptor 110V-240V, DC 9V (not included the set)Size: 168 x 31 x 21mmNet weight: 55gSet includes:1 x Diamond Tester1 x Vinyl Leather Pouch Case1 x Heavy-duty Testing PlatformEnglish Instruction Manual

Review: Can’t tell diamond from moissanite. - This tester can’t tell the difference between diamonds and moissanite.
Review: Discreto qualità prezzo

## Features

- Equipped with Ultraviolet light to test fluorescent reaction of stones
- Flexible calibration with multi Level Volume to match different sizes of stones
- Quickly distinguishes authentic diamond from all models of diamond simulants and metals, Distinguish stones as small as 2pt
- It is the easiest answer for the vast majority of retail jewellers, pawn brokers and chain stores when faced with the decision of which diamond selector to buy
- It works reliably and share the most advanced diamond selector technology on the market

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MNEB0U0 |
| ASIN  | B00MNEB0U0 |
| Batteries Included? | No |
| Batteries Required? | No |
| Customer Reviews | 3.8 3.8 out of 5 stars (153) |
| Customer reviews | 3.8 3.8 out of 5 stars (153) |
| Date First Available | 1 January 2024 |
| Date First Available  | 1 January 2024 |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 150 g |
| Item model number | JEM-II |
| Item model number  | JEM-II |
| Manufacturer | GAIN EXPRESS |
| Manufacturer  | GAIN EXPRESS |
| Material | Metal |
| Part number | JEM-II |
| Power source type | Battery Powered |
| Product Dimensions | 17.78 x 7.62 x 5.08 cm; 149.69 g |
| Product Dimensions  | 17.78 x 7.62 x 5.08 cm; 149.69 g |
| Style | Compact |

## Images

![GAIN EXPRESS Jeweler High Accuracy Diamond Tester with Ultraviolet UV Light, Professional Portable Gemstone Jewelry Gems Tool - Image 1](https://m.media-amazon.com/images/I/5123qVp9KAL.jpg)
![GAIN EXPRESS Jeweler High Accuracy Diamond Tester with Ultraviolet UV Light, Professional Portable Gemstone Jewelry Gems Tool - Image 2](https://m.media-amazon.com/images/I/713ep6Se39L.jpg)
![GAIN EXPRESS Jeweler High Accuracy Diamond Tester with Ultraviolet UV Light, Professional Portable Gemstone Jewelry Gems Tool - Image 3](https://m.media-amazon.com/images/I/71Il4Tdr3RL.jpg)
![GAIN EXPRESS Jeweler High Accuracy Diamond Tester with Ultraviolet UV Light, Professional Portable Gemstone Jewelry Gems Tool - Image 4](https://m.media-amazon.com/images/I/71nSf2iqVDL.jpg)
![GAIN EXPRESS Jeweler High Accuracy Diamond Tester with Ultraviolet UV Light, Professional Portable Gemstone Jewelry Gems Tool - Image 5](https://m.media-amazon.com/images/I/617Xh2JHOiL.jpg)

## Customer Reviews

### ⭐ Can’t tell diamond from moissanite.
*by A***O on 8 January 2026*

This tester can’t tell the difference between diamonds and moissanite.

### ⭐⭐⭐⭐ Review
*by P***A on 25 January 2026*

Discreto qualità prezzo

### ⭐⭐⭐⭐⭐ Review
*by W***M on 3 April 2025*

Very easy to use. Good price.

## Frequently Bought Together

- Gain Express Diamond Tester Pen, High Accuracy Jewelry Diamond Tester Professional Diamond Selector for Novice and Expert Jewelry Diamond
- Professional Gold, Silver, Platinum Jewelry Testing Kit with Stone Instructions and Box with 30X Eye Loupe Magnifier Precious Metals 10K 14K 18K 24K 999 925 Scrap
- Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones

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**Shop now:** [https://www.desertcart.hu/products/255063682-gain-express-jeweler-high-accuracy-diamond-tester-with-ultraviolet-uv](https://www.desertcart.hu/products/255063682-gain-express-jeweler-high-accuracy-diamond-tester-with-ultraviolet-uv)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-05*