Best Gte Gold Testers in 2026

【Multi-function 】The circuit tester offers full range of electric measurements:AC&DC Voltage/Resistance/Continuity/Frequency/Capacitance//Live Wire/Diode/Phase Sequence.

【Non Contact Voltage Tester】The electric detector enables you to detect voltage without any contact which largely avoids electrical shock.

【Beeper&Indicator Bar】Both are activated when voltage is detected.The frequency of warning tone and the color of indicator light varies depending on the voltage level

【More Safety】CE CAT.II300V RoHS Certificate. No gloves are recommended during the test, Testing AC voltage needs the human body and ground wire to form a circuit. No Electric Shock Risk, No Dangerous, More Accurate Readings. The current flowing through the human body is less than 0.1uA. (Min current the human body sense：1mA). The internal circuit of the Voltage Pen is connected in series with a large resistor, which will burn out when the current is too large, and the circuit will disconnect.

【Alarm Mode】The buzzer and indicator light will be triggered when voltage is detected. High-frequency beeps means high voltage and live wire are detected. Low-frequency beeps sound mean low voltage and null wire are detected.

【Measurable Voltage】Equipped with a sturdy metal NCV probe for testing AC voltage; the test probe touches the conductor with AC voltage, and the voltage reading will show on display. To obtain more accurate values, it is recommended not to wear gloves when using.

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.

* If the number of lights equals or exceeds 9, and it beeps, it means the diamond is true. * If the lights is about 9 and it beeps, it means the sapphire is true. * If the number is 6.5-7, it means the agate is true. * If the number is 7-8 , it means the crystal is true. * If the number is 6-7, it means the jade is true.

Before Test: 1. Put the battery in the tester. 2. Take off the probe cap. 3. Turn on the switch. 4. Make sure only one light light up on the scale. 5. Make sure the " ready lamp" light on. 6. (If test diamond, you then need to turn on the lights number corresponding to the indoor temperature and diamond weight.). 7. (If test other gems, you'd better calibrate the probe, method: by placing the probe vertically on a glass, then adjusting the light to 5, then test the gems.)

IMPORTANT TO NOTE: This product needs to be calibrated prior to use. If you experience issues with calibration, please reach out to the seller for assistance prior to returning the item.

EASY TO USE DESIGN: Ergonomic handheld design with a rubberized anti-slip grip for easy handling. Light and portable with a convenient carrying case.

THINNEST RETRACTABLE PROBE TIP: Retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, the PMuT III tests colorless diamonds as small as 0.02ct.

【DIAMOND TESTER】 Jewelry Identification Tool is a diamond selector with accurate and reliable reading, but also a multi-gem tester. Made of quality material, which is eco-friendly and durable to use. which is eco-friendly and durable to use.

【EASY TO USE】 A new portable diamond observation tool, you can use infrared irradiation in diamond to evaluate the diamond.Jewelry Identification Tool In accordance suitable for outdoor environment and adverse weather conditions, suitable for jewelry display or identification assistance.

【EASY TO TAKE】 The compact size is easy to use and portable to store. Jewelry Identification Tool Suitable for jewelry display or identification assistance. The handle of ergonomic design is convenient to grip.

Tests all colors of gold from 6K to 24K and tests platinum

Easy to read alphanumeric LCD display shows both karat value and gold percentage

Results in seconds

♠Professional Diamond Mosang stone Surveymeter will show real diamonds or fakes，Use the big/small switch to test diamonds，Makes an audible sound to easily distinguish readings.

♠It is designed for quick, precise, and safe diamond testing.Harmless to diamonds.

♠Equipped with light to test flourescent reaction of stones.Flexible calibration with multi Level Volume to match different sizes of stones.

✔【DIAMOND TESTER】 Jewelry Identification Tool is a diamond selector with accurate and reliable reading, but also a multi-gem tester. Made of quality material, which is eco-friendly and durable to use. which is eco-friendly and durable to use.

✔【EASY TO USE】 Handheld design is convenient to carry.A new portable diamond observation tool, you can use infrared irradiation in diamond to evaluate the diamond.Jewelry Identification Tool In accordance suitable for outdoor environment and adverse weather conditions, suitable for jewelry display or identification assistance.

✔【EASY TO TAKE】 The compact size is easy to use and portable to store. Jewelry Identification Tool Suitable for jewelry display or identification assistance. The handle of ergonomic design is convenient to grip.

【Complete Tool for Diamonds】Diamond tester package comes with 1 x Jewelry tester, 1 x Jewelry loupe, 1 x leather pouch case for pen, 1 x leather pouch case for Microscope, 1 x 9V battery, 1 x Testing Platform, 1 x Tweezers, 7pieces in total, which are complete and practical for you to test or observe diamonds, bringing you a good using experience.

【Clear Screen Design】These high accuracy diamond testers are designed with a clear screen, so you can get the useful data quickly; The item you are testing will be a true diamond when the data is above 9, and a true emerald crystal agate when the data is 7, you will be able to know in a few seconds whether an item is fake or not, saving your time to recognize.

【Multipurpose】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, such as diamonds, jades, emeralds, crystals, agates, gems and so on, making it possible for you to distinguish and observe them clearly and easily.

Fast and accurate: The Diamond Tester Pen is equipped with an LED light and audio indication. During the test, the LED lights up if the stone being tested is a diamond, and once our Diamond Tester Pen has completed all tests, the pen will beep as well as display a row of fully lit LEDs.

Easy to use: Simply turn on our diamond tester pen detector; place the tip of the diamond tester over the stone (a gentle press is sufficient) and if the stone is fake, crystal or cubic zirconia, the tester will not beep. To determine the clarity of the diamond, use a Loupe, magnifying glass with 60X LED illumination.

Multi-functional testing: This gemstone testing device is not only a diamond tester, but also a multi-gem tester. It can detect the authenticity of gemstones including: diamonds, sapphires, rubies, crystals, onyx, emeralds and other gemstones of all sizes.

Application: pawn broking, bank, jewelry shop, precious-metals recovery, jewelry factory, Gemstone Testing Center,precious metals researching.etc.In accordance with archimedes principle water buoyancy method, GB/T1423 of precious metals testing standard,and so on. K value of gold,PT value of platinum,density value,purity percentage can be measured.

The purity of gold,platinum,and other precious metals can be measured in a short time.; Multi-mode,gold mode,platinum mode,other precious metals mode can be shifted; Interface of RS-232C is included

Maximum weight: 300g; Weight resolution: 0.005g; Multi-function; the purity of other precious metals can be measured.such as tin,copper, silver., etc. also can be used as precision balance

◆ Application: pawn broking, bank, jewelry shop, precious-metals recovery, jewelry factory, Gemstone Testing Center,precious metals researching.etc.In accordance with archimedes principle water buoyancy method, GB/T1423 of precious metals testing standard,and so on.<br> K value of gold,PT value of platinum,density value,purity percentage can be measured.

◆ The purity of gold,platinum,and other precious metals can be measured in a short time.; Multi-mode,gold mode,platinum mode,other precious metals mode can be shifted; Interface of RS-232C is included

◆ Maximum weight: 300g; Weight resolution: 0.005g; Multi-function; the purity of other precious metals can be measured.such as tin,copper, silver., etc. also can be used as precision balance

Professional multi-functional jewelry tester that can quickly, accurately and safely screen out real and fake jewelry for you with high accuracy and reliable results.

Easy to use, just turn on the tester switch, the probe vertical contact jewelry can be automatically detected, no professional experience, beginners can also quickly master.

Equipped with LED indicators, which can visually indicate the current thermal conductivity of the jewelry and distinguish it by color, helping you to quickly determine the authenticity of the jewelry.