Best diamond testers : Top 10 Picks and Buying Guide

Looking for the diamond testers in the market? Before buying, spend some of your valuable time and do your proper homework. And if you are confused about where to start your research, don’t worry; we have got you covered.

You’ve come to the right spot because we’ve spared you the trouble of looking through tons of reviews and guidelines for finding the best diamond testers.

Read on to learn about the factors you need to think of before buying your product.

List of Top 10 diamond testers

Comparing The Best diamond testers: List Of 10

SaleBestseller No. 1
HMKIS Diamond Tester Pen, High Accuracy Jewelry Diamond Tester+ 60X Mini LED Magnifying, Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter
  • [Easy to Use]: Real Diamond will Emits sounds and lights >=9.
  • [Intuitive Design]: Fake crystal, such as cubic zirconium ( CZ ), crystal, glass will be no sounds and lights <9.
  • [fast and safe ]: This diamond selector tester designed for quick, precise, and safe diamond testing. No harm to diamonds.
  • [Magnification]: 60X led Magnification with batteries ( Small microscope ). For Gems, Coins, Antiques, Stamps, Reading, Inspection etc.
  • [Note]: Please ensure that the battery temperature is higher than 10 ℃, can not test metal, save power
Bestseller No. 2
High Accuracy Diamond Tester Professional Diamond Tester Pen Jeweler Tool for Novice and Expert - Diamond Selector II 9V Battery Included(Black Diamond Testers)
  • [Fast and safe ]:Professional Diamond Selector II will indicate genuine diamond or fake.It is designed for quick, precise, and safe diamond testing.
  • [Intuitive Design]:LCD display & LED indicator.Uses large / small switches for testing diamonds,Emits audible sounds to easily differentiate the readings.
  • [Simple to Use]:Hqdz Diamond Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn on our Diamond Tester Pen detector; place the tip of the Diamond Tester on the gem stone (lightly pressed is sufficient) and If the stone is fake, crystal or cubic zirconia, the tester will not beep.
  • [Package include]:Diamond tester is battery powered for convenience.Requires 1 standard 9v battery, which is included.Package include:1 x Diamond Tester,1 x Leather Pouch Case,1 x Testing Platform,1 x User Manual,1 x DC 9V battery.
Bestseller No. 3
Hqdz Best Sellers Diamond Tester Pen+60X Mini LED Magnifying,High Accuracy Jewelry Diamond Tester Tool,Environmental Protection 9V Battery,Professional Diamond Selector for Novice and Expert
  • ✔【Intuitive Design】Hqdz Diamond Tester Pen comes with LED lights and audio indication. During a test, if the stone tested is a diamond, the LED lights will light up as the stone passes each test conducted by the Diamond detector. Once our Diamond Tester Pen has completed all of its tests, the pen will make a beep sound as well as show a row of fully lite LED lights.
  • ✔【Simple to Use】Hqdz Diamond Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn on our Diamond Tester Pen detector; place the tip of the Diamond Tester on the gem stone (lightly pressed is sufficient) and If the stone is fake, crystal or cubic zirconia, the tester will not beep. To determine the clarity of a diamond use 60X LED lighted Loupe, magnifying glasses.
  • ✔【Fast Results】Hqdz’s Diamond Tester Pen is design to deliver fast, accurate results. You will be able to know if something is fake in a matter of seconds.
  • ✔【Portable】Hqdz Diamond Tester Pen and 60X LED Lighted Loupe each comes with its own convenient carrying cases. Both items are small and can fit into any purse or backpack. Hqdz’s Diamond Tester Pen and 60X LED Lighted Loupe combo is a must have tool kit when you are going to a garage sale, flea market, swap meet, etc. Alternatively, its also a great tool to have when testing your own jewelry.
  • ✔【Application Range】Industrial Purpose, Circuit Board And Printing , Industry, Medicine, Gardening, Coin, Diamond,Stamp, Jewelry, Appraisal, Education, Geography, Home And Office.
SaleBestseller No. 4
StillCool Diamond Tester, High Accuracy Dimond Test Pen, Professional Jewelry Diamond Tester Tool
  • LCD display & LED indicator.
  • It is designed for quick, precise, and safe diamond testing.
  • Portable electronic device for distinguishing real diamonds from other simulated stones.
  • If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ), will be no reaction.
  • Powered by DC 9V battery x 1 (Not Included)
Bestseller No. 5
[Upgraded] Diamond Tester Pen, High Accuracy Jewelry Diamond Teste Portable Electronic Diamond Tester Tool for Jewelry Jade Ruby Stone(with Battery)
  • Professional Diamond Selector II will indicate genuine diamond or fake.
  • It is designed for quick, precise, and safe diamond testing.
  • Portable electronic device for distinguishing real diamonds from other simulated stones.
  • If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ), will be no reaction
  • Emits audible sounds to easily differentiate the readings
Bestseller No. 6
cultj Diamond Combo Tester Diamond Tester Pen Professional Moissanite Tester (Type Combo)
  • Classic Diamond Tester: Diamond Combo Tester, stable and accurate performance. Designed specifically to distinguish between colorless diamonds and Mossinate.
  • Using the principle of difference of thermal conductivity and electronic conductivity between diamond , mossinate and fake diamond, A single test can distinguish colorless diamond , mossinate and fake diamonds. It is also effective for low conductivity mossinate.
  • It has alarm function when the probe touches metal and has the function of low battery alarm.
  • The tester doesn’t work for ten minutes, it will automatically extinguish the indicator light, and make a "beep" sound, It has the function of warning the user to turn off the power.
  • Bright dynamic display and sound detection results prompt tone. Portable and hand-held design, It’s ergonomic.
Bestseller No. 7
Diamond Tester Professional, High Accuracy Jewelry Diamond Tester Pen, Electronic Diamond Gem Tester and Tester Pen 60X Magnifying Glasses Tool Kit for Novice Expert
  • 💎💎【Easy to use】 Place the tip of the diamond tester gently on the gemstone. If the diamond is fake, crystalline or cubic zirconia, the tester will not beep. An excellent diamond tester tool kit, suitable for handling any exposed or mounted diamonds and gems.
  • 💎💎【Intuitive design】 Our gemstone tester has an intuitive design, light and portable, and the jewelry diamond tester is equipped with LED lights and audio instructions. As long as the tip is perpendicular to the test masonry and the switch is pressed, the result can be obtained.
  • 💎💎【Quick Identification】You just turn on our diamond test pen detector; place the tip of the diamond tester on the gemstone, and a single tap is enough. In providing fast and accurate results. You will be able to know in a few seconds whether an item is fake or not.
  • 💎💎【Accessory tools】 Magnifying glass (small microscope) equipped with 60X LED illumination. Diamond test pen can be used for gems, coins, antiques, stamps, reading, inspection, etc. Diamond tester pen is designed for fast, precise and safe diamond testing.
  • 💎💎【Professional Service】 If you have any questions about our diamond tester pen, please contact us. We have a professional dedicated to assisting you and help you answer any questions you may have.
Bestseller No. 8
Diamond Tester,High Accuracy Jewelry Diamond Tester,Jewelry Gem Tester Pen,Portable Electronic Diamond Checker Tool,Professional Diamond Selector for Novice and Expert(Battery Included)…
  • 【Non-destructive Testing】 This diamond tester is specially designed for true and false gemstone testing, not only fast and accurate, but also safe, used to distinguish real diamonds from other imitation stones, without adverse effects on gemstones, suitable for: masonry, crystal, agate, red Sapphire, Emerald and more, it is a great tool to test your jewelry
  • 【EASE OF USE】 The intuitive display design of the LCD display and LED indicator light makes the operation of the diamond checker tool easy. The probe and the object to be tested must be at a 90-degree angle, and the authenticity of the gemstone can be quickly identified according to the sound and reading (such as cubic zirconium (CZ)) Such imitations will not react when detected)
  • 【COMPACT SIZE FOR EASY PORTABILITY】 Our high accuracy diamond tester measures about 6.3 x 1.57 x 0.87 inches, it is small and portable, it is light in weight, it can be put into any handbag or backpack, and it will not put too much burden on you when using it
  • 【MATCHING BATTERY】 Each diamond tester pen has a matching alkaline mercury-free environmentally friendly high-performance battery (DC 9V battery), so you don't need to spend extra effort to choose a matching battery
  • 【NOTICE】 Please read the instructions carefully before using the professional diamond tester , and use this product correctly in order to test out accurate results
SaleBestseller No. 9
Presidium Multi Tester III (PMuT III) All-In-One Instrument for Testing Diamonds, Moissanites and Diamond Simulants
  • IMPORTANT TO NOTE: This product needs to be calibrated prior to use. If you experience issues with calibration, please reach out to the seller for assistance prior to returning the item.
  • EASY TO USE DESIGN: Ergonomic handheld design with a rubberized anti-slip grip for easy handling. Light and portable with a convenient carrying case.
  • THINNEST RETRACTABLE PROBE TIP: Retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, the PMuT III tests colorless diamonds as small as 0.02ct.
  • CLEAR, CONVENIENT DISPLAY: 180-degree multi-viewing LED display for easy readability for either right or left-handed use
  • ALL-IN-ONE INSTRUMENT: The world’s first tester that tests for both colorless diamonds and moissanites in a single instrument. Powered by 3 AAA batteries.
Bestseller No. 10
Diamond Tester, High Accuracy Diamond Tester Pen,High Accuracy Professional Jeweler Diamond Tester,for Novice and Expert-Environmental Protection 9V Battery Included,Thermal Conductivity Meter
  • ✔●Professional Diamond Selector II will indicate genuine diamond or fake,LCD display & LED indicator.
  • ✔●It is designed for quick, precise, and safe diamond testing.Emits audible sounds to easily differentiate the readings.
  • ✔●Portable electronic device for distinguishing real diamonds from other simulated stones.
  • ✔●If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ), will be no reaction.
  • ✔●Came with 5-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)

Take These Factors Into Consideration Before Purchasing Your diamond testers

Usually, before buying anything, we often consider having opinions from others who have purchased it before. Our first step of research start from ‘Word of Mouth’. That is why reviews matter so much in today’s marketing strategies, as people love to buy the facts used as practical examples by users.

Don’t worry; you don’t have to knock door to door to ask if the diamond testers is worth buying or not. Instead, just open your browser and type in the name of your product, and yo’ll find a variety of platforms selling it.

Online tops the priority list as it has become one of the best online selling platforms around the world. You can also lookup other online selling platforms and go to their review sections to get a good idea about your product.

Another useful way of finding authentic reviews is Reddit threads.Usually, people around the globe seek help for a product review or share their thoughts on how that product is as a whole. Almost all types of product threads are available if it isn’t too rare of a kind.

Therefore, by searching on Reddit, it becomes easier to know about diamond testers more as all of the comprehensive details of it are available, be it the function, size, or brand.

Even if you are looking for any specific details for your diamond testers, the online reviews can get you covered. Online has topped every other online platform in case of authenticity and trust issues. So, you may want to check out the Online review section for your diamond testers.

Although reviews will give you a wide range of criteria to look into, they are not the only thing you need to do to conduct perfect research of your diamond testers before buying it.

You should also get the answers to few questions first:

How much are you willing to pay for diamond testers?

Will the diamond testers be worth buying?

Which are the diamond testerss available in the market?

What are the things you need to check before buying the diamond testers?

What will be the way or medium (online or physical store) for buying the diamond testers?

What are the advantages of purchasing the diamond testers?

These are some basic questions you should ask before buying anything. But your inquisitive mind would surely come up with a lot more questions about buying the diamond testers. That is why you should always try to gather as much information as possible before going for the purchase.

Advantages Of Buying Products From Online Platforms

Recently, our way of shopping has drastically changed its way into online shopping. Because of its benefits and convenience, buyers have become more inclined towards it.

Now, let us dig into some reasons why it has become so famous and why you should consider buying things online as well.

Getting the Best Deals

Because items are sent directly from the manufacturer or seller, there are cheaper offers and better pricing accessible online. It’s also simpler to compare rates and get a better offer. And if you are ordering from outside of your country, you can also escape the tax charges as well.

Getting a Wide Range of Selection

The variety of options available on the internet is incredible. Almost every brand or item you’re interested in may be found here.

You have access to a considerably wider number of styles and sizes than you would find at your nearby shops.

Saving Your Precious Time

The most important benefit of online shopping is its convenience. You can order anything anytime without waiting in lines or asking help from the shop assistants to find you things.

This would save you time and also your physical hardships. No more carrying heavy shopping bags all the way from the market to your home.

How To Select The PRODUCT

Getting the finest diamond testers might be difficult for a beginner. Even for old customers, identifying the appropriate product may be difficult.

So let us show you some considerations you can make while choosing the best diamond testers:


Price is a crucial factor before buying anything as everyone wants to purchase things at a great deal. Don’t get the wrong idea that your diamond testers will only be the best deal to make when it costs more. You always need to compare the price range of other such products similar to your diamond testers and decide.

If you are not in a great hurry, waiting for a sale is always wise. When making a purchase, price should always be considered, so be mindful of what you’re spending and whether the item is worth the money.


Some people might think why brands matter if a non-branded product comes with good reviews. But brands do matter.

Simply put, how could a branded product have lasted over a decade if it didn’t have its significance? Of course, brands may matter from one product to another, but you must always compare the brands of your product before buying it.


The higher the functionality, the more extensive the specifications are. So, before you go out and buy something, you need to understand how it works.

It is mainly determined by the product’s specifications. Make sure to check the details of your diamond testers and determine if it is the one you want or not

Customer Reviews from the Other Users

Reviews have the ability to impact customer decisions while also bolstering a company’s trustworthiness. The majority of savvy buyers would look up reviews from old users experiences with the diamond testers, which helps them figure out whether it is reliable.

So, this is a good way of having a good idea about anything before buying.


Finally, before you buy something, remind yourself if you really have to. Often we like to buy something, and that’s fine; but, to avoid wasting money on stuff you don’t need, consider the product’s worth to you.

You don’t have to buy anything just because it’s on sale or has good ratings. But if you have your mindset to the best diamond testers, you now know the best possible ways to purchase it.

So, go for buying the best PRODUCT out there in the market and make the good deal out of it.

Leave a Comment

Your email address will not be published.