Written by Ada Varela
Published: 06 Feb 2024
Reviewed by Camryn Rabideau
When it comes to buying diamonds, it's important to make sure they're real. That's where a diamond tester comes in. These little gadgets can help you determine if a diamond is genuine or not. In this article, we'll take a look at the 5 best diamond testers on the market. If you're in the market for a diamond tester, keep reading to find out which ones are worth checking out.
Overall Score: 8/10
The HMKIS Diamond Tester Pen is a high accuracy jewelry diamond tester designed for both novice and expert users. It features thermal conductivity meter, two hands operation, metal alert, magnification, and is capable of testing for diamonds and imitations. The product dimensions are 10.16Lx2.17Wx1.38H. The diamond tester has received a customer rating of 4.2 out of 5, with users praising its accuracy and ease of use, but noting some limitations.
Key Features
- Initialization: Turn the wheel to keep 4 green lights on.
- Two Hands Operation: All tests must be done by two hands.
- For Diamond: Emits beeping and lights up red lamp for testing diamonds.
- For Imitation: No sound and no red lamp for imitation stones.
- Metal Alert: Emits beeping for testing metal with metal alert buzzer.
- Other Alert: Emits beeping for testing other items.
- Magnification: 60X LED magnification with batteries.
- Bare Hands Operation: All tests done by bare hands.
- Moissanite & Real Diamonds: Cannot distinguish moissanite & real diamonds.
Specifications
- Color: Diamond Tester+ Magnifier
- Dimension: 10.16Lx2.17Wx1.38H
- Size: Jeweler Tester
Pros
- High accuracy
- Easy to use
- Great for testing moissanite
- Allows magnification up to 60X
Cons
- Cannot distinguish moissanite & real diamonds
- May not be durable
The HMKIS Diamond Tester Pen is a reliable and easy-to-use tool for testing diamonds and imitations, with the added benefit of magnification. While it may have some limitations, it provides great value for both novice and expert users.
Overall Score: 9/10
The Diamond Tester Kit includes a diamond tester pen and two mini LED magnifying glasses, making it suitable for testing all exposed or mounted diamonds and gemstones. The tester tool can detect if a gemstone is real or fake and is equipped with LED lights and audio instructions for easy use. It utilizes the principle of thermal and electrical conductivity to distinguish between diamond, moissanite, and imitation diamond. The kit also comes with 30x and 60x magnifying glasses for clear magnification effect, as well as carrying cases for portability. It is suitable for testing gems, jewelry, coins, stamps, watches, and more. The color of the kit is black and its dimensions are 7.87Lx5.12Wx0.28H.
Key Features
- Includes diamond tester pen and 2 mini LED magnifying glasses
- Equipped with LED lights and audio instructions
- Utilizes principle of thermal and electrical conductivity
- Comes with 30x and 60x magnifying glasses
- Portable handheld diamond tester with carrying cases
Specifications
- Color: Black
- Dimension: 7.87Lx5.12Wx0.28H
Pros
- Portable and easy to use
- Equipped with LED lights and audio instructions
- Includes carrying cases for portability
- Suitable for testing various gems and jewelry items
Cons
The Portable Diamond Tester Kit is a convenient and easy-to-use tool for testing the authenticity of diamonds and other gemstones. Its LED lights and audio instructions make it user-friendly, and the inclusion of magnifying glasses adds to its versatility. The kit’s portability and compact design make it a must-have for anyone interested in jewelry, gems, or precious stones.
Overall Score: 8/10
The High Accuracy Diamond Tester Pen is designed for both novice and expert users and ensures accurate testing of diamonds. With an intuitive design and quick, safe testing process, this diamond selector tester comes with an LCD display and LED indicator for easy reading of results. It operates with a standard 9v battery and includes a leather pouch case, testing platform, and user manual.
Key Features
- Intuitive LCD display and LED indicator
- Effortless operation
- Quick and safe testing process
- Battery-powered with included 9v battery
- Comes with leather pouch case and user manual
Specifications
- Color: Diamond Tester
- Dimension: 5.91Lx1.57Wx1.18H
Pros
- Accurate testing results
- Easy to operate
- Safe for diamonds during testing
- Convenient package with leather pouch case
Cons
- May have confusing directions for some users
The High Accuracy Diamond Tester Pen is a reliable tool for both novices and experts in testing diamonds. With its intuitive design, quick and safe testing process, and convenient package, it ensures accurate results and ease of use. While some users may find the directions confusing, the overall quality and performance make it a valuable investment for testing the authenticity of diamonds.
Overall Score: 7.5/10
The HMKIS Diamond Tester Pen and 9V Battery Kit is a high accuracy jewelry diamond tester designed for both novice and expert users. It is a thermal conductivity meter that helps in distinguishing between genuine diamonds and fake ones. With simple initialization and easy operation, it provides accurate results when testing various stones and metals. However, it is not able to distinguish moissanite and real diamonds. Its compact size and metal alert feature make it a convenient tool for jewelers and anyone dealing with precious stones.
Key Features
- Initialization process for accurate results
- Different alerts for testing diamond, imitation, metal, and others
- Metal alert buzzer for warning against touching metals
- Specialized in distinguishing diamond and fake diamond
- Bare hands operation for all tests
Specifications
- Color: Diamond Tester
- Dimension: 7.48Lx2.28Wx1.42H
- Size: Jeweler Tester
Pros
- Accurate results when following instructions
- Easy to operate and initialize
- Great for testing a variety of stones and metals
- Compact and portable design
- Metal alert feature for added convenience
Cons
- Not able to distinguish moissanite and real diamonds
- May have issues with accuracy for smaller stones
- Volume gauge can have fluctuating readings
The HMKIS Diamond Tester Pen and 9V Battery Kit is a reliable and convenient tool for anyone handling jewelry and precious stones. While it may have limitations in distinguishing certain types of stones, its ease of use, portability, and metal alert feature make it a valuable addition to a jeweler’s toolkit or for those seeking peace of mind when testing stones.
Overall Score: 8/10
Are you a jewelry enthusiast or professional looking for a reliable diamond tester and magnifying glass? Look no further than the Diamond Tester Pen and Jewelers Eye Loupe set. The diamond tester features an intuitive design and high accuracy, capable of detecting real or fake gemstones including diamonds, sapphires, rubies, and more. The 40X magnifying glass with LED and UV lights ensures clear visibility, making it perfect for examining banknotes, passports, and jewelry. Compact and pocket-sized, this set is a must-have for professionals and hobbyists alike.
Key Features
- Easy to Use&Intuitive Design
- High Accuracy Diamond Tester
- Bright LED&Pocket size
- 40X HAND LENS&Bright LED
- Professional Service
Specifications
- Color: Black
- Dimension: 5.91Lx1.57Wx1.57H
Pros
- Accurate diamond testing
- Includes 40X jeweler's loupe
- Convenient pocket size
- Professional-grade quality
- Great value for the price
Cons
- May beep on non-gemstone materials
- Some stones may give false readings
The Diamond Tester Pen and Jewelers Eye Loupe set offers exceptional value and accuracy for both professionals and enthusiasts. Its compact design, intuitive operation, and high accuracy make it a valuable tool for anyone dealing with gemstones or jewelry. Despite some minor limitations, the set’s overall performance and functionality make it a worthwhile investment.
- Types of Diamond Testers:
- Thermal Conductivity Testers
- Electrical Conductivity Testers
- Ultraviolet Light Testers
- Moissanite Testers
- Key Features to Look for:
- Accuracy: Look for testers with higher accuracy to ensure reliable results.
- Ease of Use: Choose a tester that is easy to use and understand.
- Portability: Consider the size and weight of the tester if you need to carry it around.
- Testing Speed: Some testers provide quick results, while others may take longer.
- Testable Materials: Check if the tester can also identify other gemstones or materials.
- Price Range:
- Entry-level diamond testers can range from $50-$200.
- Mid-range testers typically cost between $200-$500.
- High-end testers with advanced features can go for over $500.
- Compatibility with Diamond Shapes and Sizes:
- Ensure the tester can accurately identify various diamond shapes and sizes.
- Customer Reviews:
- Read customer reviews to get insights on the performance and reliability of the diamond tester.
- Warranty and Support:
- Look for testers with a good warranty and reliable customer support in case of any issues.
- Professional Recommendations:
- If you're unsure, seek advice from jewelers or gemologists for their recommendations on the best diamond tester.
Frequently Asked Questions about 5 Best Diamond Tester
A diamond tester can help you determine if a gemstone is a real diamond or a fake one. It does this by measuring the thermal conductivity of the stone, which is a unique property of diamonds.
Yes, a diamond tester is very simple to use. You just need to place the tester on the surface of the stone and wait for the results. Most testers have clear indicators that show whether the stone is genuine or not.
Diamond testers are quite reliable in determining whether a stone is a real diamond or not. However, there are some factors, such as the shape and size of the stone, that may affect the accuracy of the tester.
Yes, diamond testers are designed to be used at home and are portable and easy to handle. You can use a diamond tester to check the authenticity of your jewelry or gemstones without having to go to a professional.
Diamond testers are specifically made to test for the thermal conductivity of diamonds, so they may not be accurate for other types of gemstones. It’s best to use a diamond tester only on stones that you suspect are diamonds.
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