• 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.
  • It is designed for quick, precise, and safe diamond test.
  • LED light and audio indicate testing result.
  • Portable electronic device for distinguishing real diamonds from other simulated stones.

I bought this selector for testing my diamond rings. LOL Cuz i am afraid that if the diamonds on my rings are all genuine. Fortunately, i got all diamonds not genuine on my diamond rings. Its accuracy is amazing. it is what i expected before!! lol love this so much !!! Gotta recommended this to my friends who wanna buy diamond jewelries.

We tested diamonds, pre tested with positive results. Excited about ability to test beryl as so many lab grown stones are misrepresented as genuine

Came in a timely manner, intact. Uses as described. Checks for diamonds. More details on checking other stones would have been appreciated. Will be used for my needsas expected.

I have couple of diamond accessories, a ring and an earring, I always do know whether those diamonds are with high clarity and high grade. The tool is easy to use and could tell you whether it is indeed good quality diamond.

I have a diamond ,want to know it is true or not ,it good for that ! so I buy. it .it is quick to know !

I bought a storage unit that had a bunch of jewlery but wanted to test them myself before taking them anywhere to sell and get ripped off. Its a little hard to use at first but it did exactly as described once i figured it out. It was very accurate and it helped let me know that some of what i found were real diamonds!

This diamond selector works very well! I had some jewelry and I couldn't remember which was diamond and which wasn't. This cleared it right up. And the bonus lighted magnifier is awesome! I had no idea my jewelry was SO dirty. Oops!

Have been a professional jeweler for over 20 years and have owned a number of diamond testers. This one works as well as testers I've owned that cost 10 times more. We now have testers at the check-out counters, repair intake station, and my briefcase. One thing, turn it on, let it warms up then turn the wheel back til the beeping stops. Thats where it should be to test diamonds.

I am a beginner to intermediate jewelry student. I work with a lot of gemstones and I'm always curious whether the cheap stones i buy online are actually real! This is a bit complicated to use but seems to work well once you figure it out. First off you need a 9v battery. Then you have to take the black rubber tip off. When using the device you have to have your bare hands touch the metal plate on the back so it's conductive. I like the mini tray with indentations that it comes with so you can set smaller stones onto it to test. Just test it perpendicular to the stone, not just touching any part. And pay attention to the directions since size of stone and ambient temp also affects it!