---
product_id: 458672910
title: "mollo Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit for Novice & Expert, Thermal Conductivity Meter (Diamond Tester), (DT-1)"
brand: "mollo"
price: "¥230"
currency: JPY
in_stock: true
reviews_count: 4
url: https://www.desertcart.jp/products/458672910-mollo-diamond-tester-high-accuracy-diamond-tester-pen-jewelry-diamond
store_origin: JP
region: Japan
---

# High accuracy diamond detection Multi-gemstone testing capability Includes eco-friendly 9V battery mollo Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit for Novice & Expert, Thermal Conductivity Meter (Diamond Tester), (DT-1)

**Brand:** mollo
**Price:** ¥230
**Availability:** ✅ In Stock

## Summary

> 💎 Don’t just guess—know your gems with precision and style!

## Quick Answers

- **What is this?** mollo Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit for Novice & Expert, Thermal Conductivity Meter (Diamond Tester), (DT-1) by mollo
- **How much does it cost?** ¥230 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/458672910-mollo-diamond-tester-high-accuracy-diamond-tester-pen-jewelry-diamond)

## Best For

- mollo enthusiasts

## Why This Product

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

## Key Features

- • **Dual Mode Testing:** Large/small switch adapts to different diamond sizes for quick, reliable results every time.
- • **Risk-Free Confidence:** Backed by a 2-year warranty and factory-tested quality for professional and novice users alike.
- • **Portable & Ready to Go:** Compact, lightweight design with included battery and leather pouch—test anywhere, anytime.
- • **Precision You Can Trust:** Detects diamonds and 7+ precious stones with pinpoint accuracy, eliminating guesswork.
- • **Smart Visual & Audio Alerts:** LCD display, LED indicators, and audible signals make gemstone verification effortless and foolproof.

## Overview

The Mollo DT-1 Diamond Tester Pen is a professional-grade thermal conductivity meter designed for both novices and experts. It accurately identifies real diamonds and multiple other precious stones like sapphire, ruby, and jadeite using a combination of LCD, LED, and audible alerts. Featuring a dual-mode switch for different stone sizes, it comes complete with an eco-friendly 9V battery, leather pouch, and a 2-year warranty, making it a portable, reliable tool for gemstone authentication.

## Description

High Accuracy Diamond Tester Pen,Environmental Protection 9V Battery,Jewelry Diamond Tester. Features: Diamond indicator will be showed if the stone is a REAL diamond (Green light). Metal alert (continuous buzzing sound when user accidentally touches metal rather than stone). Large / small switch for testing diamonds / - 8 points. LCD display & LED indicator. Powered by DC 9V battery x 1 ( Included) How To Test Diamond Turn on the switch. Make sure only 1 light is lighting up on the scale. Wait few seconds for the probe to heat up until Lamp on ready OK. Turn on the lights numbers corresponding to the indoor temperature and diamond weight. If don't know. Set 4 lights is lighting up on the scale. Start test diamond, no need to adjust the switch switch. Use the diamond discriminator probe to make 90-degree contact with the measured object, and observe the indicator light change. It needs a little bit of force to stop it on the diamond surface and make full contact. If unsuccessful, please repeat the second step. Molo Diamond Tester Pen Test result analysis If lights >= 9 and have sounds, it is true diamond. If lights <9 and no sounds, it is not diamond. If lights is 7 or 8, it is true crystal. If lights is 6 or 7, it is true jade. If lights is 4 or 5, it is glass. Don't test metal，Don't wear gloves. In a low temperature environment, the battery discharge is weakened. Please raise the battery temperature to above 10 degrees Celsius. The test takes a few minutes, please turn off the power after the test is complete. Package include: 1 x Diamond Tester 1 x Leather Pouch Case 1 x Testing Platform 1 x User Manual Our products are all from factory direct supply, we can guarantee 100% inspection before shipping. If any problems of our products really exist, an exchange or a refund is available.

## Features

- ✔This gemstone testing equipment is not only a diamond tester, but also a multi gemstone tester. It can detect if a gemstone is real or fake, including: diamond, sapphire, ruby, crystal, agate, jadeite, and other precious stone of various sizes.
- ✔Professional Diamond Selector II will indicate genuine diamond or fake,Lcd display & led indicator.Emits audible sounds to easily differentiate the readings,Portable electronic device for distinguishing real diamonds from other simulated stones.
- ✔large / small switches for testing diamonds,It is designed for quick, precise, and safe diamond testing.If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ) will be no reaction.
- ✔Came with 2-Year Warranty TAKE YOUR CHANCE !!Click the "ADD TO CART "Button Now!Thank You For Your Choice !Package Contents: 1 x Diamond Tester,1 x Use Manual,1 x 9v Battery ( included)
- ✔☛ NOTICE: * No matter what gemstone you are testing, the probe needle and the tested object must be at a 90° angle. * When testing diamond, your right index finger must keep touching the metal panel on the back of the tester, while you do not touch the panel if you test other gemstones. * Do Not test any metal. * Do Not wear glove.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Mollo |
| Model Number | DT-1 |
| Color | Diamond Tester |
| Product Dimensions | 15 x 4 x 3 cm; 154 g |
| Material | Metal |
| Item Weight | 154 g |

## Product Details

- **Brand:** Mollo
- **Power source:** Battery Powered
- **Style:** portable
- **Colour:** Diamond Tester
- **Item weight:** 0.15 Kilograms

## Images

![mollo Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit for Novice & Expert, Thermal Conductivity Meter (Diamond Tester), (DT-1) - Image 1](https://m.media-amazon.com/images/I/71PiUwcLStL.jpg)
![mollo Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit for Novice & Expert, Thermal Conductivity Meter (Diamond Tester), (DT-1) - Image 2](https://m.media-amazon.com/images/I/71Xdi70d4wL.jpg)
![mollo Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit for Novice & Expert, Thermal Conductivity Meter (Diamond Tester), (DT-1) - Image 3](https://m.media-amazon.com/images/I/61qhKt3n6wL.jpg)
![mollo Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit for Novice & Expert, Thermal Conductivity Meter (Diamond Tester), (DT-1) - Image 4](https://m.media-amazon.com/images/I/710rD57FBvL.jpg)
![mollo Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit for Novice & Expert, Thermal Conductivity Meter (Diamond Tester), (DT-1) - Image 5](https://m.media-amazon.com/images/I/71m52NJiWxL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    It does work.
  

*by W***N on Reviewed in the United States on 31 July 2024*

I tested it against everything that I knew wasn't real to everything that I knew was real and even the questionable items. It was accurate every time. Just need to know the proper settings for every each item.

### ⭐⭐⭐ 







  
  
    Item check if it's real or not
  

*by V***A on Reviewed in the United States on 29 January 2023*

Shorter does the job that it's meant to it's OK

### ⭐⭐⭐⭐⭐ 







  
  
    Well he was cheap
  

*by V***. on Reviewed in the United States on 25 November 2022*

Loved the product, found out my husband was a cheapo. SMH

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-31*