Best Diamond Testers In July 2025

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Check out our product review of the Best Diamond Testers. We tried 10 models and can tell you the absolute best varieties.

To help you in your search, we have completed this list of the Best Diamond Testers.

Top Rated Best Diamond Testers Of 2025

Rank	Product Name	Score
1	HDE Jeweler Tool Kit Diamond Selector V2 Portable Tester + 45X Illuminated LED Buy Now	9.7 Buy Now
2	Diamond Tester Pen,WECHIC High Accuracy Professional Jeweler Diamond Tester for Novice and Expert Buy Now	9.5 Buy Now
3	StillCool Diamond Tester II V2 Selector Gemstone Jewelry Gems Tool with Case Buy Now	9.1 Buy Now
4	Professional Diamond Selector II, Gem Tester Pen Portable Electronic Diamond Tester Tool Buy Now	8.8 Buy Now
5	Best High Accuracy Diamond Tester Professional Jeweler for Novice and Expert - Diamond Buy Now	8.6 Buy Now
6	HEYMOUS Diamond Tester High Accuracy Portable Diamond Detective Test Kit with Gem Tester Buy Now	8.3 Buy Now
7	PHYHOO High Accuracy Professional Jeweler Diamond Tester For Novice and Expert Buy Now	8.1 Buy Now
8	Diamond Tester＋60X LED Magnifying Glasses Jeweler Tool Kit Combo，for Novice and Expert Buy Now	7.8 Buy Now
9	High Accuracy Diamond Tester Professional Jeweler for Novice and Expert - Diamond Selector Buy Now	7.5 Buy Now
10	Professional Jeweler Diamond Tester High Accuracy For Novice and Expert Portable Diamond Selector Buy Now	7.2 Buy Now

1. HDE Jeweler Tool Kit Diamond Selector V2 Portable Tester + 45X Illuminated LED

• 45x illuminated led loupe comes with batteries included
• Emits audible sounds to give accurate readings. diamond indicator will be showed if the stone is a real diamond
• Hde is a registered trademark and is the only authorized seller of hde branded products
• Batteries: 1 x 9v battery (not included)
• Accurately differentiate diamonds from other materials | large / small switch for testing diamonds

2. Diamond Tester Pen,WECHIC High Accuracy Professional Jeweler Diamond Tester for Novice and Expert

• Package contents: 1 x diamond tester
• Uses large / small switches for testing diamonds
• Emits audible sounds to easily differentiate the readings
• Professional diamond selector ii will indicate genuine diamond or fak
• Batteries: 1 x 9v battery (not included)

3. StillCool Diamond Tester II V2 Selector Gemstone Jewelry Gems Tool with Case

• Portable electronic device for distinguishing real diamonds from other simulated stones.
• Powered by dc 9v battery x 1 (not included)
• If stone is fake crystal, a simulant such as cubic zirconium ( cz ), will be no reaction.
• Lcd display & led indicator.
• It is designed for quick, precise, and safe diamond testing.

4. Professional Diamond Selector II, Gem Tester Pen Portable Electronic Diamond Tester Tool

• Led light and audio indicate testing result.
• Portable electronic device for distinguishing real diamonds from other simulated stones.
• 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.
• It is designed for quick, precise, and safe diamond test.

5. Best High Accuracy Diamond Tester Professional Jeweler for Novice and Expert - Diamond

• Professional diamond selector ii will indicate genuine diamond or fake
• If stone is fake crystal, a simulant such as cubic zirconium ( cz ), will be no reaction.
• Emits audible sounds to easily differentiate the readings
• Portable electronic device for distinguishing real diamonds from other simulated stones.
• It is designed for quick, precise, and safe diamond testing.

6. HEYMOUS Diamond Tester High Accuracy Portable Diamond Detective Test Kit with Gem Tester

• The diamond selector is accurate and reliable reading, accurately differentiate diamonds from other materials
• Operation simple and accurate, emit audible sounds to give accurate reading
• Batteries: 1 x 9v battery (not included). 45x illuminated led loupe comes with batteries included
• This diamond tester comes with a small testing tray for holding loose stones
• The diamond tester and 45x jeweler's loupe will help you to tell the difference between a genuine diamond and fake diamond, diamond indicator will be showed if the stone is a real diamond

7. PHYHOO High Accuracy Professional Jeweler Diamond Tester For Novice and Expert

• Professional diamond selector ii will indicate genuine diamond or fake
• Emits audible sounds to easily differentiate the readings
• Uses large / small switches for testing diamonds
• Package contents: 1 x diamond tester
• Batteries: 1 x 9v battery (not included)

8. Diamond Tester＋60X LED Magnifying Glasses Jeweler Tool Kit Combo，for Novice and Expert

• Portablemolo 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. molos 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 t...
• Simple to usemolo 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...
• Intuitive designmolo 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.
• Fast resultsmolos 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.
• Application rangeindustrial purpose, circuit board and printing , industry, medicine, gardening, coin, diamond,stamp, jewelry, appraisal, education, geography, home and office.

9. High Accuracy Diamond Tester Professional Jeweler for Novice and Expert - Diamond Selector

• Emits audible sounds to easily differentiate the readings
• If stone is fake crystal, a simulant such as cubic zirconium ( cz ), will be no reaction.
• Portable electronic device for distinguishing real diamonds from other simulated stones.
• It is designed for quick, precise, and safe diamond testing.
• Professional diamond selector ii will indicate genuine diamond or fake

10. Professional Jeweler Diamond Tester High Accuracy For Novice and Expert Portable Diamond Selector

• Professional diamond selector ii will indicate genuine diamond or fake
• Batteries: 1 x 9v battery (not included)
• Emits audible sounds to easily differentiate the readings
• Package contents: 1 x diamond tester
• Uses large / small switches for testing diamonds