Best Gemstone Tester

When it comes to buying gemstones, you want to make sure that you are not paying too much for fake ones. And the best way to do this is by using a gemstone tester before finalizing your purchase.

A gemstone tester is used to check the quality of gems and minerals before they are sold or given as gifts. There are many different types of testers so it is important to know how they work. Here, are some details about some of the most popular types of testers available on the market today.

#1. Presidium Gem Tester II

If you want the best gemstone tester, the gem tester presidium II is the way to go in our opinion. It offers the best combination of durability, ease of use, reliability, and price.

It has one of the industry’s smallest probes coming in at just 0.6mm which is capable of very small detecting gemstones.

Our favorite part is that it is just easy to use, easy to read, and gives you consistent results each and every time.

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What is the Best Gem Tester and Gemstone Tester

There are many gem testers available for purchase. It can be difficult to choose the one that is best for you. It will all depend on what you want to test and what your budget is.

Some gem testers are more expensive than others but they usually provide more information about the gemstone.

The price of these gems can range from $100 to $3000, so it may take some time and research before deciding which gem tester will work best for you and your budget.

Here are the best testers that we researched, tested and do the job perfectly:

#1. Presidium Gem Tester II

For those interested in the best gemstone tester, we have to hand it over to the Presidium Gem Tester II.

This is definitely one of the industry standards and is the best value in our opinion. We like this instrument because it is incredibly precise as it can test very small gemstones down to 0.02 carats.

There is also a detachable probe pen with a retractable thermoelectric probe tip.

The standout feature is probably that it has one of the industry’s thinnest probe tips at 0.6mm. Also, it runs on 2 AA Batteries and the battery life is actually surprisingly pretty good.

Overall, this gemstone tester is simple and very easy to use. It has no waiting time between tests and gives you consistent reliable results every single time.

What is the presidium gem tester’s accuracy?

The presidium gem tester accuracy is a term that is only used in the jewelry trade and it measures the accuracy of a gemstone tester.

When you purchase a diamond or precious stone, there is always some chance that it may not be as described. The presidium gem tester accuracy measures how often this happens.

The presidium gem tester accuracy is high. The precision is not less than 98%.

Presidium gem testers are accurate to an accuracy of 98%.

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#2. SmartPro SPGE-I Gem Eye I Gemstone Tester

Next up, we have the SmartPro SPGE-I Gem Eye I Gemstone Tester, which is the best gemstone tester for those who already know their gemstones beforehand.

In other words, this machine is definitely not good for a beginner or novice who has limited knowledge of gemstones. You will need a good background knowledge of gemstones to properly identify them.

However, if you already consider yourself very knowledgeable, this instrument can be a great assistant. It is very consistent and always reliable as far as we can tell.

Just keep in mind that it is a very sensitive instrument and many things can throw off your reading, such as extreme hot and cold weather, a dirty probe, and clean material.

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#3. TekcoPlus Gemstone Tester

Another pretty good option when it comes to the best gemstone tester is the TekcoPlus Gemstone Tester. This is definitely a nice budget-friendly option for those who want something cheap and reliable.

While it is certainly not as accurate or just well built as the above two brands, the TekcoPlus is definitely something respectable and will give you decently good readings.

This is a handheld device and comes with a fine elastic tipped probe used to detect various gems. In general, we find this dual diamond/moissanite tester to be surprisingly accurate.

However, it does have some pitfalls, namely the pitiful battery life and the fact that you have to wait a few minutes for it to “warm-up” before using it.

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#4. Still Cool Diamond Tester II V2

The Still Cool Diamond Tester II V2 is a serious contender with the TekcoPlus for the best budget-friendly gemstone tester.

This one is seriously cheap, but does it hold up to the performance test? In general, yes, but there are a few caveats.

First and foremost, it is cheaply made and we feel like it can break pretty much anytime. In fact, it feels like a toy and quite unreliable.

Second, it works for many types of other stones as it tests hardness, but it doesn’t really give you that much information.

There is still a lot of stuff you have to interpret visually yourself. So is this cheap gemstone tester worth it? We think yes because it doesn’t hurt and actually helps you confirm some of your visual inspection.

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#5. Presidium Multi Tester III

Finally, the last product we recommend is the Presidium Multi Tester III, which is Presidium’s handheld gemstone tester. We really like it because it is like the portable version of their tabletop device.

It has a nice retractable tip and best of all there is no waiting time in between tests. It even has a built-in metal detector, which is a nice little bonus.

Like its tabletop version, it is very precise and accurate and can detect diamonds as small as 0.02 ct.

The user interface is also quite nice and has this nice 180-degree multi-view LED. It also has split-second test results, surface mount technology, and a nice ergonomic design with a nice sturdy anti-slip grip. This device definitely rivals its tabletop predecessor.

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What is the difference between the presidium gem tester and a jeweler’s loupe?

The presidium gem tester is a device that can be used to test the authenticity of a gemstone. It has a lens that magnifies the stone as well as measures its clarity and color. The jeweler’s loupe is an instrument that jewelers use to examine gemstones, but these are not that accurate and that’s why jewelers like a gem testers.

Having said so, loupes or magnifiers are the preferred tools used by diamonds experts to look for nice gems. So, if you are an expert, then use a loupe, by if you are halfway through becoming an expert, then you’d better stick to a gem tester.

Final words

It can be tricky to find the best gemstone tester. There are so many different models on the market, many with mixed reviews.

In this article, we have put a number of brief reviews of the most popular gemstone testers on the market today.

We had a look at what each model has to offer and gave you our opinion of which is worth your money. To be honest, the Presidium Gem Tester it the top tester you can find out there. It is simple to use a highly accurate.



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