Best Diamond Gemstone Tester Reviews & Alternatives

A diamond gemstone tester can be a great investment for those who want to simplify their work needs. With the increase in standing desk popularity, many people looking for the best diamond gemstone tester feel overwhelmed by the wide range of options available. From traditional diamond gemstone tester  to convertible models, the dizzying slew of choices might make you feel the need to take advantage

What are the features that make the best diamond gemstone tester? These compact and convenient diamond gemstone tester are easy to install and easy to use at the same time. And then there’s the price! Below, we’ll run through the average diamond gemstone tester cost of some of the most popular types, so you can get a good idea of where to start with your budget.

The reasons you should trust us

We recommend products in each review using an intensive research process, spending hours combing through the best available models on Amazon. For a product to make our list of top picks, it must hold a solid sales record on Amazon, have consistently positive customer reviews, and offer unique features, among other factors. After narrowing down our recommendations, we conduct additional research to ensure that the products meet our standards. Once we conclude the research phase, we craft a well-rounded, user-friendly article that includes our recommended products and additional information to help homeowners like you make the right purchase. The following key factors are considered when analyzing:

  • The quality of diamond gemstone tester
  • Each product’s design
  • How it’s built
  • Price comparison
  • How durable [replace-keyword] is
  • Features
  • Cost-effectiveness
  • Versatility
  • Product usability
  • The functionality of the diamond gemstone tester
  • Performance of the products
  • Product dimensions and weight
  • Return policy and warranty, and more.

Best diamond gemstone tester & Features

1. Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones

Features :

  • INCLUDED ASSISTED THERMAL CALIBRATION | Now easily self calibrate your device to your testing environment
  • INDUSTRIES MOST TRUSTED | Gemstone tester redesigned to be more compact, sturdy and portable
  • THINNEST RETRACTABLE PROBE TIP I PGT II features the industry’s thinnest retractable probe tip
  • VERSATILE AND RELIABLE | Consistent and reliable results every time. Identifies diamonds/moissanites
  • SIMPLE & EASY TO USE | Clear and easy-to-read analog dial; Can differentiate 16 types of gemstones

Additional Info :

Color Black
Item Dimensions
Height 3.8
Width 4.5
Length 7.8

2. Dupeakya Professional Diamond Tester, Gem Tester Pen Portable Electronic Diamond Tester Tool for Jewelry Jade Ruby Stone

Features :

  • Fast And Precise: This gemstone tester pen is designed to detect if a diamond or gemstone is real or fake, Diamond Selector II will indicate genuine diamond or fake in seconds.
  • Simple to Use: Diamond Tester Pen is simple to operate to get results. Real Diamond will emit sounds and lights >=9. It is designed for quick, precise, and safe diamond testing.
  • Portable: Portable electronic device for distinguishing real diamonds from other simulated stones. LCD displays & LED indicators. Uses switches for testing diamonds, Emits audible sounds to easily differentiate the readings.
  • NOTICE: * When 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. * Don’t wear gloves.
  • Service: If you have any questions about use, please feel free to contact us. Package contains: 1 x diamond tester, 1 x 60X Mini LED Magnifying,1 x user manual. This product uses dc9v battery (not including battery)

Additional Info :

Color black
Item Dimensions
Height 0.8661417314
Width 1.574803148
Length 6.299212592

3. Presidium Instruments Gem Tester II (PGT II) Now with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones

Features :

  • NOTE: The calibration may be affected during shipping. If you have issues, reach out to the seller.
  • INDUSTRIES MOST TRUSTED gemstone tester redesigned to be more compact, sturdy and portable.
  • THINNEST RETRACTABLE PROBE TIP: PGT II features the industry’s thinnest retractable probe tip.
  • VERSATILE AND RELIABLE: Consistent and reliable results every time. Identifies diamonds/moissanites.
  • SIMPLE & EASY TO USE: Clear and easy-to-read analog dial; Can differentiate 16 types of gemstones.

Additional Info :

Item Dimensions
Height 7.8
Width 3.8
Length 4.5

4. Diamond Tester II, Professional Jeweler Diamond Selector II High Accuracy Portable Moissanite Tester Gemstone Tester Testing Tool Set For Novice and Expert

Features :

  • Customer Service: We ship from the United States and will be delivered in 4-8 days. At the same time, we will reply to your message within 24 hours. Happy purchase
  • Package Includes: Diamond Selector II is equipped with a PU bag and a small test tray for holding loose gems
  • How to Use: If the gemstone is a real diamond, the green indicator will be displayed on the Diamond Selector II. When the user accidentally touches metal instead of stone, a continuous buzzing sound will be emitted
  • Specialty: Moissanite Tester is an instrument matched with Diamond Selector II. It is only used to distinguish colorless moissanite
  • Function: Diamond Selector II can help you distinguish whether a diamond is a real diamond or a fake diamond

Additional Info :

Item Dimensions
Height 2.362204722
Width 3.149606296
Length 7.480314953

5. High Accuracy Professional 2pt Jewel Stone Combo Gem Jewelry Jeweler Tester Test Selection Tool Kit selector Meter Device for Diamond Moissanite Metal Gemstone Novice and Expert

Features :

  • Working time:about 2 hours of continous use
  • Probe warm up time:about 25 seconds
  • Built in metal detector
  • With “beep” sound indicator

Additional Info :

Color Diamond Moissanite Tester

6. Compact Gemstone Tester, Diamond Tester, Fashionable for Professional Home

Features :

  • ◆【HIGH-PRECISION DIAMOND TESTER】◆ The professional diamond selector will display real diamonds or fake diamonds, LED lights and audio result indications, with strong sensitivity and accuracy.
  • ◆【PORTABLE DESIGN】◆ The operation of this diamond discriminator is simple and accurate. And the tester is light, compact and easy to carry, designed for fast, accurate and safe diamond testing. It is easy to calibrate gems of various sizes.
  • ◆【EASY TO USE】◆ This diamond tester has a highly compact design that can help you distinguish the difference between real diamonds and fake diamonds. The tester comes with a PU box and a small test platform for fixing loose stones, which is easy to use even for novices.
  • ◆【MULTIFUNCTIONAL】◆ The tester provides a highly compact design, which is very suitable for buying jewelry, buying/trading diamonds, selling real estate, auctions, etc. Can be used for fast, accurate and safe diamond testing.
  • ◆【WORRY-FREE AFTER-SALES SERVICE】◆ If there is any problem with your flashlight, or you are sure that it is not suitable for you, we will always be with you. Please contact us directly through Amazon. We will provide you with refunds and exchanges. Let you buy with confidence.

Additional Info :

Item Dimensions
Height 0.8267716527
Width 1.574803148
Length 6.299212592

7. SSEF Diamond-Type Spotter and Blue Diamond Tester Made Easy: The “RIGHT-WAY” Guide to Using Gem Identification Tools (The “RIGHT-WAY” Series to Using Gem Identification Tools)

Additional Info :

Item Dimensions
Height 9
Width 0.05
Length 6
Weight 0.1

8. Diamond Checker Tool Electronic Kit – Gem Tester Electronic Pole Identifier Gemstone Jewelry Led Pen Tester with Case – Diamond Tester Professional Precious Metal Verifier Detector Diamond

Features :

  • Size of Diamond Tester Pen: The gemstone tester pen dimensions are 6.6 Inches long, 1.6 Inches wide, and 0.8 Inches thick. The portable diamond tester gadget is lightweight, matched with a practical carrying case.
  • Detection Way: The tester indicates genuine diamond or fake, the jewelry tester meter is designed and manufactured according to the thermal conductivity of diamond, the fake crystal, a simulant such as cubic zirconia does not have any reaction.
  • Result Indicator of Diamond Reader: With diamond gem tester you will be able to know in a few seconds whether an item is fake or not, there are the LED indicator and the audible signal a red light will be displayed and an audible indicator will sound if the stone is a real diamond.
  • Easy to Operate Jade Jewelry Tester: Simple calibration for stones of various sizes the jewelry tester silver and diamond tester are easy to use even for a new beginner, tester electronic pen is also a great tool to have when testing your own jewelry.
  • Wide Uses of Electronic Diamond Tester: The diamond tester professional tester is mainly used for industrial purposes, circuit boards, and printing, industry, gardening, coin, diamond, stamp, jewelry, appraisal, education, geography, home, and office.

9. DANOPLUS Professional Diamond Moissanite Tester, High Accuracy Jewelry Test Tool Kit Combo, 2pt Gemstone Factory Calibrated Identifier Device

Features :

  • ACCURATE & RELIABLE: This device is designed to help you quickly determine diamond and moissanite from other fake stones. It can distinguish gemstones as small as 2 pt.
  • SIMPLE TO USE: Easy to operate without the need to make any necessary adjustments in the LED bar graph via volume control to match stones of different sizes, like those used in other diamond testers.
  • WITH BUILT- IN METAL DETECTOR: Metal detector signals if the metal setting is touched instead of the stone. Without this feature, other testers can indicate a real diamond when you unknowingly touch the setting even if the diamond is fake.
  • NON-SLIP DESIGN: Designed with rubber paint finish, this device provides safe, non-slip comfort and control. It is also equipped with a fine elastic tipped probe for testing and identifying stones with small sizes.
  • PORTABLE & DEPENDABLE: With its compact-sized design, it’s easy to bring when you need it, where you need it. It also allows continuous use of up to 2 hours and quick probe warm up time of 25 seconds.

Additional Info :

10. SmartPro SPGE-I Gem Eye I Gem and Diamond Tester Smart Pro

Features :

  • High efficiency
  • Industry’s thinnest probe tip (0.48mm) for testing diamonds as small as 0.01ct
  • Identifies metals, simulants and diamonds instantly
  • Portable tester that can be used anywhere
  • No waiting time between tests

Buying Guide for diamond gemstone tester

To help you buy the perfect diamond gemstone tester for your needs and requirements, we have mentioned some of the best diamond gemstone tester in this article. Not only that, but you can also learn about their differences as we have mentioned their major features and options.

To help you on your way, we’ve listed some questions you may want to consider before making any purchase.

  • Why do I want to buy this?
  • Do I need it or just want it?
  • Am I getting the best deal?
  • How often will I use it?
  • Can I pay cash for it?
  • Is it budgeted for?
  • Can I borrow it?
  • Can I get it used?

Although, if you still want to learn more about these diamond gemstone tester for buying the perfect one, we are here with a detailed buying guide just for you. Since this buying guide is related to diamond gemstone tester, you can find many major features and aspects related to diamond gemstone tester. Thus, you can easily choose the perfect one by going through this article until the end.


The diamond gemstone tester should last more than one use and hold up against normal wear and tear. We recommend reading the product description before purchasing diamond gemstone tester to ensure they’ll last a while. Additionally, pay attention to the wash instructions.


When choosing the best diamond gemstone tester, you must consider its versatility.  It is important to make sure that your unit can be used for performing different tasks.

For instance, if you need to use your unit for other purposes in any other materials, getting the one with a versatile design will be an ideal option for you.


The brand is another crucial factor you must consider while looking for the diamond gemstone tester.  You will find both well-known and unknown brands in the market. If you are looking for a reliable and durable model, I recommend getting one from a well-known brand.

They use high-quality materials and the latest technology to manufacture their products.  As a result, you will be able to get a durable and long-lasting diamond gemstone tester.

Ease of Use

While choosing the diamond gemstone tester, you must ensure that it is easy to use.  It is important to get the one that comes with a user-friendly design.


As a result, you will be able to use your unit for a long time without facing any discomfort.  Also, getting the one that comes with an easy-to-use design will help you save a lot of time and effort.


The price is another essential factor you must consider while looking for the diamond gemstone tester.  You need to get the one that fits your budget perfectly.

Getting the one that comes at an affordable price will help you save a lot of money.  However, you must ensure that it meets your needs and requirements perfectly.


The diamond gemstone tester should be easy to carry for you. Therefore, consider the size, style, design, and all the other basic features to check for the actual portability of the device. Portability comes with comfort and ease, and you need to look for all the features to look for a suitable diamond gemstone tester.


The price of your diamond gemstone tester will depend upon its features and the overall quality. There are some inexpensive options in the market, but they may not have the best features.

The term ‘budget’ is broader because it completely depends on the user who wants to purchase the diamond gemstone tester. In this case, you can prepare a list of all the features you want to have in your diamond gemstone tester. Then, look for the product that comes with these features and works well.

After that, you should carefully check the prices of each air compressor machine on your list. This will give you a precise idea about the budget you need to prepare for the diamond gemstone tester you should go after.


It is important to consider your unit’s weight while working in congested areas. Getting a lightweight model will be ideal if you need to work regularly in difficult-to-reach places.

However, if portability is not your concern and you are looking for a durable model, you can go for the one with a little heavyweight.


The warranty of diamond gemstone tester is when the manufacturer offers free repairs or replacements for any damages that occur to the product.

You need to check the warranty of diamond gemstone tester before buying it, as you don’t want a product that doesn’t come with a warranty.

At the same time, you also need to remember that some diamond gemstone tester come with a longer warranty than others, so select one with a long warranty if possible.

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