With its state-of-the-art technology, LAPIS, the best diamond tester pen for household use, can distinguish between diamond, moissanite, simulant and metal in a flash.

As accuracy is one of the most important features of any diamond testing pen, LAPIS’ probe tip ensures more accurate and reliable results by initially measuring heat then electrical conductivity. Also, there is a built-in thermos sensor in the diamond tester pen to adapt to ambient temperature for enhanced accuracy.

Furthermore, LAPIS has a retractable probe tip that ensures consistent pressure against the gemstone throughout the test in order to produce more accurate results. This makes it much easier for users to operate and determine the type of gemstones in front of them.

Being the best diamond tester pen in the industry, the LAPIS focuses on the details. As we know, the smallest change can make a big difference. That’s why the LED result display window and the beep function makes the LAPIS stands out, making it the most value-for-money diamond tester pen for sale on the market. It is easily operated, and the test results will be shown on the Results Window with different LED indicators, as well as with different beep patterns. Additionally, there is no waiting time for subsequent testing.

More importantly, the LAPIS offers you with an affordable diamond testing pen price among other similar products in the market.

The LAPIS pack comes with a diamond testing pen, a metal stone rest, a lanyard and a universal charging adapter. There are three different sizes of stone rests to conveniently fit most of the loose gemstones for verification. The charger will operate on any AC voltage from 90–240V, allowing you to connect it to any electrical supply anywhere in the world.

Pay once, and the all-inclusive diamond testing pen price of LAPIS covers all you need. Find the most convenient diamond tester pen for sale here at Gemlogis.

Not necessarily. The inbuilt lithium rechargeable battery of the LAPIS diamond testing pen has a 450mAh capacity. To charge the product, you can just plug in the charger (included in the diamond testing pen price and package) into your wall outlet. Once fully charged, the battery capacity will allow for 10 hours continuous use. Also, the diamond tester pen can be used at the same time while its battery is being charged. There is a built-in feature that allows the product to automatically power off after 10 minutes of inactivity to preserve the battery. Just be warned that the diamond tester pen may stop working if it is over-charged, or while charging the battery in a high temperature environment.

With a weight of only about 70g, the LAPIS is undoubtedly the lightest diamond tester pen for sale in demand. You may carry it with you anytime and anywhere without feeling any weight.

The battery of the LAPIS diamond tester pen will need to be charged for at least 2 hours prior to the first use. To start using it, please remove the protective cap at the probe tip and press the ON/OFF button. You should allow approximately 20 seconds for the product to warm up, after which a green LED light in the Results Window will flash continuously. Once the green LED stops flashing, and an audible beep is heard, you can move on to the next step.

To enhance the accuracy of the test, you are advised to remove oxidation off the diamond testing pen simply by rubbing the probe tip softly on paper or the metal stone rest. (Check out the video below for usage instructions) Now the product is ready for use.

First, you need to make sure that the stone is well mounted and is in contact with its metal setting or mounting. For verifying loose gemstones, you need to place the stone on the supplied Metal Stone Rest and secure it with one hand while holding the LAPIS diamond testing pen with the other. Next, you should place the tip of the probe pen against a face of the stone. Then press quickly, firmly and avoid touching the metal setting in order to establish a reading. The result will be shown in the Results Window immediately.

The recommended ambient temperature for the LAPIS diamond tester pen is between 16℃-30℃ with relative humidity below 80%. Please allow the diamond testing pen and the gemstone or jewelry to adjust to room temperature prior to performing a test.

Please be aware that you should not test a stone that is wet or dirty. If there’s any dirt, grease or other contaminants on the gemstone, it will affect the accuracy of the result, even with the best diamond tester pen like LAPIS. Hence, you should always remember to clean the stone with a dry and clean tissue or jewelry cloth to remove any moisture and dust beforehand. Or else a false reading and risk of damaging the probe tip may occur if these procedures are not followed.

The accuracy of the results of the diamond testing pen will be aff­ected if small gemstones overheat due to prolonged contact with the tip of the product. For checking very small gemstones (0.1 carat and below), it’s crucial to allow the gemstones to cool down to room temperature in between tests in order to achieve optimum accuracy. In addition, you are not recommended to perform any test when the low battery indicator lights up. Please remember the battery of the diamond tester pen should be fully charged to prevent any inaccurate readings.

We advise to handle the probe tip of the LAPIS diamond tester pen with care, especially when initially removing the protective cap. When the probe is not in use, always replace the protective cap to keep the probe tip from becoming damaged. Moreover, the test tip of the LAPIS diamond testing pen is ESD (electrostatic-sensitive device) sensitive. To avoid resetting the system, do not touch the test tip with your fingers.

Of course. As one of the best diamond tester pens in the industry, LAPIS features a 12 months limited warranty. Also, the full diamond testing pen price includes a one year limited warranty for defects in material and workmanship.

Please note that batteries and probe tip are not covered under this warranty. For unauthorized repairs, misuse, modification and alteration, tampering or accidental damage, neglect or improper use, this warranty will be voided. Certain terms and conditions apply with our diamond tester pen for sale.

There are different diamond tester pens for sale on the internet and on the market. Therefore, you probably would ask, “How to choose the best diamond tester pen for myself?” The answer is simple.

First, you should be aware that the diamond testing pen price might vary depending on its quality, size and features. As a result, in addition to compare the size and features of a diamond tester pen, you should also learn about the background and history of the brands.

Gemlogis is recognized as the leading innovator in gemological instruments. Our reputation as an OBM (Original Brand Manufacturer) and ODM (Original Design Manufacturer) guarantees our products are unique and on the top-tier in the industry.

If you are looking for the most reliable and affordable diamond testing pen, LAPIS should surely be your first choice!