The 8 Best authentic Diamond testers (2023 reviews)

The hmkis authentic diamond tester should be able to handle its purpose and duties with ease. It is good for diamond, crystal, jade, and glass. It does signal differences between crystal, stone, and glass. It can tell you if a stone is a real diamond or not. If even slightly tilted, it will give no reading or alert as diamond. It also comes in a cardboard storage box for extra protection.

You will love the fact it actually comes with its kit, cover cases, a battery, and a lil Flashlight/UVLight Microscope. It is a good tool to have around the house, easy to check types of stones you may come across.

Why We Like This:

Easy to use, and fun worked well
Easy-peas for someone who is not a jeweler to test their diamonds
Come in a cardboard storage box for extra protection

Dupeakya authentic Diamond Tester

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The dupeakya authentic diamond tester's material feels more premium than its price would suggest. This is a great tool for a fast look at estate sales, no more guessing if it is glass or stone. It works for all diamonds, including black diamonds and white diamonds. It is made of carbon which is a great conductor of currents. The level wheel is a sensitivity selector. The tester differentiates between natural crystals and man made crystals "synthetic" like CZ's.

This has an electric conductance test to warn you of metal contact. It is a very basic tester, if it glass lights won’t move. This device can also test ruby, sapphire, emerald, topaz, etc.

Why We Like This:

Great tester for gems and diamonds
Man-made diamonds are flawless and beautiful
Simple devise to help quickly determine authenticity of stone
Highly recommended for anyone who cannot afford to be fooled

Presidium gemstone Tester

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Not everyone likes to purchase tester for their regular usage, but the presidium gemstone tester would be an anomoly. Most stones in alluvial sands are relatively pure and have been cleaned mechanically by the elements. It is a must have if your hobby involves gemstones. The Presidium Gem Tester II (PGT II) features a clear and direct analog display for a quick way to identify diamonds/moissanite and separate up to 15 common colored gemstones from one another based on their thermal conductivity. It reads cubic zirconia as glass, which is great, since there are so many cubic zirconia fakes from India and China. It can test stones in or out of a setting, so you can hold in your fingers and get a reading.

This machine takes skill and practice and you have to know what you're doing. It will tell you what the hardness is, based on the MOHS scale, and then on the machine it lists the most common stones like garnets, quartz, and up to diamonds. It is good for testing gemstones, however if the stone is too small in a piece of jewelry, the tester will normally hit the side and not register.

Why We Like This:

Gives a range of what the stone could be
Works of 120vac or battery operation for portable use
Good brand reputation

Presidium authentic Diamond Tester

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Compared with other tester in this category, the presidium authentic diamond tester has a convenient design. The Diamondmate diamond tester, like a thermal conductivity tester, can not eliminate synthetic moissanite. It is made with gem mounting. It can be sensitive too if you do not place properly on the smaller diamond. It comes also with a very nice storage pouch with a little slot inside to store the batteries when not in use.

This tester is a bit akward to see the results over the finger movements while testing. The diamondmate diamond tester utilizes a proven thermal conductivity testing method to instantly verify the authenticity of diamonds. It is easy to leave on or accidentally turn on. It does not come with rechargeable batteries.

Why We Like This:

Easy to use and works well
Works great and was accurate every time
Works great no issues at all
Operates on alkaline (aaa) batteries or direct ac current

Tekcoplus authentic Diamond Tester

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The tekcoplus authentic diamond tester might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few months. This professional 2pt jewel stone combo tester kit is the perfect device for accurately identifying diamonds, moissanites, metals, and gemstones. It features a fine, elastic-tipped probe that is capable of testing stones as small as 2pt. It is a unique form of carbon, with its name derived from the greek word for "unbreakable. It's a little chunky, and you have to learn how to hold it precisely to get accurate results from testing.

This dual diamond/moissanite tester is very accurate. It comes with this tool, users can quickly and accurately identify the authenticity of a stone, ensuring that they are getting what they paid for. The beep sound indicator lets you know when the device is ready to use, so you can stay focused on your work and not waste time waiting for it to warm up. It is easy to use with clear and concise instructions included. The portable and lightweight design allows for convenient testing wherever you go.

Why We Like This:

Works best on big stones not on smaller stones
Come in many colours such as brown, blue, orange, red, pink and black
New and hot release

Yscp authentic Diamond Tester

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The yscp authentic diamond tester is the best convenient tester on the market today. 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. It 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.

The intuitive display design of the LCD display and LED indicator light makes the operation of the diamond checker tool easy. The 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.

Why We Like This:

Good brand reputation
New and hot release

Siziviki authentic Diamond Tester

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The features department is where siziviki authentic diamond tester truly manages to shine. The Diamond Tester Pen High Accuracy Professional Jeweler can be used for diamond, jade, crystal, and agate. If it is a real diamond, the indicator light of the instrument will reach above 9, and it will be accompanied by a beeping sound. The probe is 90 degrees vertical to the diamond. The diamond checker tool can easily and quickly test the authenticity of the tested items.

Why We Like This:

New and hot release
Delivers what they promise

Zakvop authentic Diamond Tester

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Zakvop is known for creating pragmatic and minimalist tester for people on the go, and its line of zakvop authentic diamond tester definitely falls in line with that reputation. The probe of diamond detector is very sensitive and must be protected with special care. It can not only detect the authenticity of diamonds, but also detect the authenticity of jewelry. The diamond tester pen is simple to operate to get results. There is a rollyswitch on the side, the more you roll, the more the light indicators go up. The battery temperature is lower than 10 degrees Celsius, which seriously affects the use time. The real diamond will make sound and LED light > =.

Why We Like This:

Best to measure in no wind conditions
Good investment for long term