20 Best Diamond Tester Pen [2024]

Are you looking for the best diamond tester pen? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling diamond tester pen.

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1 HMKIS Diamond Tester Pen, High Accuracy Jewelry Diamond Tester+ 60X Mini LED Magnifying,... HMKIS Diamond Tester Pen, High Accuracy Jewelry Diamond Tester+ 60X Mini LED Magnifying,...
2 StillCool Diamond Tester, High Accuracy Diamond Test Pen, Professional Jewelry Diamond Tester Tool StillCool Diamond Tester, High Accuracy Diamond Test Pen, Professional Jewelry Diamond Tester Tool
3 Diamond Tester High Accuracy Diamond Tester Pen,Environmental Protection 9V Battery,Professional... Diamond Tester High Accuracy Diamond Tester Pen,Environmental Protection 9V Battery,Professional...
4 High Accuracy Diamond Tester Professional Diamond Tester Pen Jeweler Tool for Novice and Expert -... High Accuracy Diamond Tester Professional Diamond Tester Pen Jeweler Tool for Novice and Expert -...
5 Diamond Tester Pen, High Accuracy Jewelry Diamond Tester+200g/0.01g Mini Jewelry Scale+60X Mini... Diamond Tester Pen, High Accuracy Jewelry Diamond Tester+200g/0.01g Mini Jewelry Scale+60X...
6 Diamond Tester Pen+60X Mini LED Magnifying,High Accuracy Jewelry Diamond Tester Tool,Environmental... Diamond Tester Pen+60X Mini LED Magnifying,High Accuracy Jewelry Diamond Tester...
7 Diamond Tester, Diamond Detector, Diamond Tester Pen, Diamond Tester Professional, Diamond Detector,... Diamond Tester, Diamond Detector, Diamond Tester Pen, Diamond Tester Professional, Diamond...
8 Presidium Multi Tester III (PMuT III) All-In-One Instrument for Testing Diamonds, Moissanites and... Presidium Multi Tester III (PMuT III) All-In-One Instrument for Testing Diamonds, Moissanites and...
9 [Upgraded] Diamond Tester Pen, High Accuracy Jewelry Diamond Teste Portable Electronic Diamond... [Upgraded] Diamond Tester Pen, High Accuracy Jewelry Diamond Teste Portable Electronic Diamond...
10 xinler Xinler Accuracy Jewelry-Diamond Tester Pen Professional Jewelry Diamond Tester Tool Black... xinler Xinler Accuracy Jewelry-Diamond Tester Pen Professional Jewelry Diamond Tester Tool Black...
11 PRESIDIUM DIAMONDMATE-C ELECTRONIC DIAMOND TESTER PRESIDIUM DIAMONDMATE-C ELECTRONIC DIAMOND TESTER
12 Diamond Tester, Jeweler Professional Checker Pen for Jewelry Stone Gem Jade, Electronic Diamond... Diamond Tester, Jeweler Professional Checker Pen for Jewelry Stone Gem Jade, Electronic Diamond...
13 StillCool Diamond Tester, High Accuracy Dimond Test Pen, Professional Jewelry Diamond Tester Tool StillCool Diamond Tester, High Accuracy Dimond Test Pen, Professional Jewelry Diamond Tester Tool
14 Diamond Tester Professional, High Accuracy Jewelry Diamond Tester Pen, Electronic Diamond Gem Tester... Diamond Tester Professional, High Accuracy Jewelry Diamond Tester Pen, Electronic Diamond Gem...
15 Diamond Tester Pen, Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter Diamond Tester Pen, Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter
16 High Accuracy Diamond Tester Jewelry Diamond Detector Gem Diamond Tester Pen 30X 60X Illuminated... High Accuracy Diamond Tester Jewelry Diamond Detector Gem Diamond Tester Pen 30X 60X Illuminated...
17 GemOro Testerossa Talking Diamond, Moissanite & White Sapphire Tester, Silver GemOro Testerossa Talking Diamond, Moissanite & White Sapphire Tester, Silver
18 Culti Jeweler's Diamond Testing Pieces-Professional Loupe and Electronic Diamond Tester Machine Culti Jeweler's Diamond Testing Pieces-Professional Loupe and Electronic Diamond Tester Machine
19 cultj Diamond Combo Tester II Diamond Tester Pen Professional Moissanite Tester Low Conductivity... cultj Diamond Combo Tester II Diamond Tester Pen Professional Moissanite Tester Low Conductivity...
20 Diamond Tester,High Accuracy Jewelry Diamond Tester,Jewelry Gem Tester Pen,Portable Electronic... Diamond Tester,High Accuracy Jewelry Diamond Tester,Jewelry Gem Tester Pen,Portable...
SaleBestseller No. 1
HMKIS Diamond Tester Pen, High Accuracy Jewelry Diamond Tester+ 60X Mini LED Magnifying,...
  • [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
StillCool Diamond Tester, High Accuracy Diamond 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. 3
Diamond Tester High Accuracy Diamond Tester Pen,Environmental Protection 9V Battery,Professional...
  • ✔●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...
Bestseller No. 4
High Accuracy Diamond Tester Professional Diamond Tester Pen Jeweler Tool for Novice and Expert -...
  • [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...
  • [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...
  • [Package include]:Diamond tester is battery powered for convenience.Requires 1 standard 9v battery, which is included.Package include:1 x Diamond...
Bestseller No. 5
Diamond Tester Pen, High Accuracy Jewelry Diamond Tester+200g/0.01g Mini Jewelry Scale+60X Mini...
  • 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,...
  • Simple to Use Diamond Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn on our Diamond Tester Pen...
  • This pocket scale has 200 gram max weight capacity and reads weights in increments of 0.01g. High precision sensors make sure the accuracy. 6 weigh...
  • Portable 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...
  • Application Range:Industrial Purpose, Circuit Board And Printing , Industry, Medicine, Gardening, Coin, Diamond,Stamp, Jewelry, Appraisal, Education,...
Bestseller No. 6
Diamond Tester Pen+60X Mini LED Magnifying,High Accuracy Jewelry Diamond Tester Tool,Environmental...
  • ✔【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...
  • ✔【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...
  • ✔【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...
  • ✔【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...
  • ✔【Application Range】Industrial Purpose, Circuit Board And Printing , Industry, Medicine, Gardening, Coin, Diamond,Stamp, Jewelry, Appraisal,...
Bestseller No. 7
Diamond Tester, Diamond Detector, Diamond Tester Pen, Diamond Tester Professional, Diamond Detector,...
  • 【SIMPLE AND FAST TO USE】Our diamond detector can quickly test the authenticity of diamonds, jade, agate, and crystal. If it is a real diamond, the...
  • 【REASONABLE DESIGN】Our High Accuracy Professional Jeweler is the second generation and the diamond gem tester is very simple to use. You just need...
  • 【QUICK DISTINGUISH】You just need to open our diamond gem tester, put the tip of Diamond Detector perpendicular to the gemstone (90 degrees)....
  • 【SCOPE OF APPLICATION】Diamond Tester Pen High Accuracy Professional Jeweler can be used for diamond, jade, crystal, agate. diamond checker tool...
  • 【SERVICE】If you have any questions about the use, please feel free to contact us, we will reply to you within 24 hours. Package includes:1 x...
SaleBestseller No. 8
Presidium Multi Tester III (PMuT III) All-In-One Instrument for Testing Diamonds, Moissanites and...
  • 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...
  • 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....
  • 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...
Bestseller No. 9
[Upgraded] Diamond Tester Pen, High Accuracy Jewelry Diamond Teste Portable Electronic Diamond...
  • 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
SaleBestseller No. 10
xinler Xinler Accuracy Jewelry-Diamond Tester Pen Professional Jewelry Diamond Tester Tool Black...
  • 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,...
  • If the number of lights equals or exceeds 9, and it beeps, it means the diamond is true. * If the lights is about 9 and it beeps, it means the...
  • Before Test: 1. Put the battery in the tester. 2. Take off the probe cap. 3. Turn on the switch. 4. Make sure only one light light up on the scale. 5....
  • ★ 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...
  • Product size: 16 * 4 * 2.2 cm. weight: 100g. Power needed: 1x 9V battery (not included). If you have any problem about the testing, please contact us,...
Bestseller No. 11
PRESIDIUM DIAMONDMATE-C ELECTRONIC DIAMOND TESTER
  • Verifies authenticity of diamonds instantly
  • Thin probe tip (.6mm) for testing diamonds as small as .02ct
  • Retractable thermoelectric probe tip for enhanced accuracy that ensures constant pressure between probe and gemstone
  • No wait time between test
  • Metal alert buzzer
Bestseller No. 12
Diamond Tester, Jeweler Professional Checker Pen for Jewelry Stone Gem Jade, Electronic Diamond...
  • 【Expert】Professional Diamond Selector II will distinguish genuine diamond or counterfeit.
  • 【Accurate】It is designed for quick, accurate and safe Non-destructive diamond testing.
  • 【Feature】Low power consumption, low battery alarm (red light indication) for Moissanite Tester.
  • 【Protable】Lightweight and compact in size, easy and to carry.
  • 【Include Battery】Include a PU bag and small testing tray for holding loose stones. Package Contents:1 x bag| 1 x Diamond Tester | Batteries: 1 x...
SaleBestseller No. 13
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. 14
Diamond Tester Professional, High Accuracy Jewelry Diamond Tester Pen, Electronic Diamond Gem Tester...
  • 💎💎【Easy to use】 Place the tip of the diamond tester gently on the gemstone. If the diamond is fake, crystalline or cubic zirconia, the...
  • 💎💎【Intuitive design】 Our gemstone tester has an intuitive design, light and portable, and the jewelry diamond tester is equipped with LED...
  • 💎💎【Quick Identification】You just turn on our diamond test pen detector; place the tip of the diamond tester on the gemstone, and a single...
  • 💎💎【Accessory tools】 Magnifying glass (small microscope) equipped with 60X LED illumination. Diamond test pen can be used for gems, coins,...
  • 💎💎【Professional Service】 If you have any questions about our diamond tester pen, please contact us. We have a professional dedicated to...
Bestseller No. 15
Diamond Tester Pen, Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter
  • Real Diamond will Emits sounds and lights >=9.
  • This diamond selector tester designed for quick, precise, and safe diamond testing.
  • Fake crystal, such as cubic zirconium ( CZ ), crystal, glass will be no sounds and lights <9.
  • If the stone is fake, crystal or cubic zirconia, the tester will not beep.
  • Diamond tester is battery powered for convenience.Requires 1 standard 9v battery, which is included.Package include:1 x Diamond Tester,1 x Leather...
Bestseller No. 16
High Accuracy Diamond Tester Jewelry Diamond Detector Gem Diamond Tester Pen 30X 60X Illuminated...
  • Complete tool for diamonds: the package comes with 1 piece of Jewelry tester and 1 piece of Jewelry loupe, 2 pieces in total, which are complete and...
  • Clear screen design: these high accuracy diamond testers are designed with a clear screen, so you can get the useful data quickly; The item you are...
  • Multiple uses: the gold testing kit is suitable for testing various items, such as diamonds, jades, emeralds, crystals, agates, gems and so on, making...
  • Practical Jewelry loupe: the mini LED foldable magnifying is equipped with 30X 60X lens, portable and reliable for you to see the item you want to...
  • Size details: the jewelry diamond detector measures about 6.3 x 1.7 x 0.8 inches, mini and portable for you to hold or store, offering you a lot of...
Bestseller No. 17
GemOro Testerossa Talking Diamond, Moissanite & White Sapphire Tester, Silver
  • Country Of Origin: China
  • Model Number: 0770
  • Item Package Dimension: 25.0" L x 14.0" W x 17.0" H
  • Item Package Weight: 2.0 lb
Bestseller No. 18
Culti Jeweler's Diamond Testing Pieces-Professional Loupe and Electronic Diamond Tester Machine
  • Excellent kit for anyone who handles loose or set diamonds & gemstones and other jewelry and precious metals items
  • Includes genuine Culti Diamond Selector II with 60-day money back guarantee
  • Digital diamond tester includes leather case
  • Authentic PuriTEST gold-colored 30x magnifying loupe, sealed in box
  • All materials brand new and ready to ship
Bestseller No. 19
cultj Diamond Combo Tester II Diamond Tester Pen Professional Moissanite Tester Low Conductivity...
  • Classic Diamond Combo Tester II, stable and accurate performance. Designed specially to distinguish between colorless diamonds, HPHT type lab-grown...
  • Using the principle of different thermal conductivity and electrical conductivity between diamond ,HPHT type lab-grown diamond, mossanite and fake...
  • 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...
  • Bright dynamic display and sound detection results prompt tone. Portable and hand-held design, It’s ergonomic.
Bestseller No. 20
Diamond Tester,High Accuracy Jewelry Diamond Tester,Jewelry Gem Tester Pen,Portable Electronic...
  • 【Non-destructive Testing】 This diamond tester is specially designed for true and false gemstone testing, not only fast and accurate, but also...
  • 【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...
  • 【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...
  • 【MATCHING BATTERY】 Each diamond tester pen has a matching alkaline mercury-free environmentally friendly high-performance battery (DC 9V battery),...
  • 【NOTICE】 Please read the instructions carefully before using the professional diamond tester , and use this product correctly in order to test out...

Having trouble finding a great diamond tester pen?

This problem is well understood by us because we have gone through the entire diamond tester pen research process ourselves, which is why we have put together a comprehensive list of the best diamond tester pens available in the market today.

After hours of searching and using all the models on the market, we have found the best diamond tester pen for 2023. See our ranking below!

How Do You Buy The Best Diamond Tester Pen?

Do you get stressed out thinking about shopping for a great diamond tester pen? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching diamond tester pen, which is why we have assembled a comprehensive list of the greatest diamond tester pen available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for diamond tester pen that you consider buying. Your questions might include the following:

  • Is it worth buying an diamond tester pen?
  • What benefits are there with buying an diamond tester pen?
  • What factors deserve consideration when shopping for an effective diamond tester pen?
  • Why is it crucial to invest in any diamond tester pen, much less the best one?
  • Which diamond tester pen are good in the current market?
  • Where can you find information like this about diamond tester pen?

We’re convinced that you likely have far more questions than just these regarding diamond tester pen, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for diamond tester pen, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible diamond tester pen. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an diamond tester pen buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available diamond tester pen currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of diamond tester pen has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an diamond tester pen?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your diamond tester pen.
  5. Customer Ratings: Number ratings grade diamond tester pen objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their diamond tester pen.
  7. Product Quality: You don’t always get what you pay for with an diamond tester pen, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an diamond tester pen is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining diamond tester pen information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding diamond tester pen is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: Can Diamond testers be fooled?

A: Many diamond testers can’t perceive the small difference, others are fooled because they aren’t calibrated properly to pick up the slight difference in conductivity. Even with their limitations, Diamond Testers are still valuable tools for jewelers and gemologists, they just can’t be trusted to tell the full story.

Q: Does a diamond tester work?

A: Yes! A diamond tester will also work on ruby or and other real gemstones. A diamond tester uses the same technology to detect if a gemstone is truly real. Diamond testers not only work on diamonds and rubies but all other types of jewelry and stones.

Q: What is a diamond tester?

A: A diamond tester is a portable device that you can put in your pocket. The tester has a small, needle-like tip that needs to be placed on the stone tested. If the diamond is real, the device indicates that on its display or with a sound signal.