10 Best Diamond Tester of August 2025

• Professional Diamond Selector II will indicate genuine diamond or fake
• It is designed for quick, precise, and safe diamond testing.
• Portable electronic device for distinguishing real diamonds from other simulated stones.
• If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ), will be no reaction.
• Emits audible sounds to easily differentiate the readings

Hqdz

• [Easy to Use]: Real Diamond will Emits sounds and lights >=9.
• [Intuitive Design]: Fake crystal, such as cubic zirconium ( CZ ), crystal, glass will be no sounds and lights <9.
• [fast and safe ]: This diamond selector tester designed for quick, precise, and safe diamond testing. No harm to diamonds.
• [Battery included]: Our diamond tester is powered by DC 9V battery and the battery is included.
• [Service]: If you have any questions about use, please contact us. We will explain in detail. Professional equipment, the use method needs to learn slowly.

Lotustech

• 1.Package included:1 x Portable Diamond Tester,1 x Carrying Case,1 x Testing Platform
• 2.The red light will be showed and the audio indicator will ring if the stone is real diamond.
• 3.It can be suitable for jewelry,gemstone,document,and currency authentication.
• 4.Use switches for testing diamonds,Emits audible sounds to easily differentiate the readings
• 5.The jewelry diamond tester selector is powered by DC 9V battery but the battery is not included.

TANJIN

• Professional Diamond Selector II will indicate genuine diamond or fake
• Uses large / small switches for testing diamonds
• Emits audible sounds to easily differentiate the readings
• Diamond tester is battery powered for convenience
• Requires 1 standard 9v battery, which is not included

HDE

• LCD display & LED indicator.
• It is designed for quick, precise, and safe diamond testing.
• Portable electronic device for distinguishing real diamonds from other simulated stones.
• If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ), will be no reaction.
• Powered by DC 9V battery x 1 (Not Included)

StillCool

• 💎【Portable Design】Diamond tester is equipped with convenient carrying cases. Designed for rapid, accurate and safe diamond testing. Through non-destructive testing, the operation is simple and precise.
• 💎【Easy to Use】Green indicator will be showed on Diamond Selector II if the stone is a real diamond. It will make continuous buzzing sound when user accidentally touches metal rather than stone.
• 💎【Fast Results】If the stone is a real diamond, the pen will make a beep sound as well as show at least 9 LED lights. A green indicator will be displayed.
• 💎【High Security】After 10 minutes' use of Moissanite Tester, the power indicator light (green light is automatically turned off) and long beep sounds will alert the user to turn off the instrument.
• 💎【Package Contents】1 x Diamond Tester, 1 x Leather Pouch Case, 1 x Testing Platform, 1 x User Manual, 1 x9V battery.

Anbane

• 【Function】: Quickly and accurately mark genuine or fake diamonds
• 【Convenience】: Portable electronic device
• 【Use】: Use large /small switch to test diamond
• 【Readings】: Emits audible sounds, easily distinguish the readings
• 【Customer First】: We provide high-quality after-sales service. If you have any questions,please feel free to contact us

Leonnn

• [Easy to Use]: Real Diamond will Emits sounds and lights >=9.
• [Intuitive Design]: Fake crystal, such as cubic zirconium ( CZ ), crystal, glass will be no sounds and lights <9.
• [fast and safe ]: This diamond selector tester designed for quick, precise, and safe diamond testing. No harm to diamonds.
• [Magnification]: 60X led Magnification with batteries ( Small microscope ). For Gems, Coins, Antiques, Stamps, Reading, Inspection etc.
• [Service]: If you have any questions about use, please contact us. We will explain in detail. Professional equipment, the use method needs to learn slowly.

HMKIS

• 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.)
• ★ NOTICE: * No matter what gemstone you are testing, the probe needle and the tested object must be at a 90° angle. * When testing diamond, your right index finger must keep touching the metal panel on the back of the tester, while you do not touch the panel if you test other gemstones. * Do Not test any metal. * Do Not wear glove.
• Product size: 16 * 4 * 2.2 cm. weight: 100g. Power needed: 1x 9V battery (not included). If you have any problem about the testing, please contact us, we would love to help.

JZK

• Professional Diamond Selector II will indicate genuine diamond or fak
• Uses large / small switches for testing diamonds
• Emits audible sounds to easily differentiate the readings
• Batteries: 1 x 9v Battery (not included)
• Package Contents: 1 x Diamond Tester

WECHIC