Diamond Tester Jewelry Gem Stone Tester Moissanite Tester Professional 2pt Jewel Stone Combo Tester Kit for Diamond, Moissanite, Metal and Gemstone Selection - High Accuracy Jeweler Test Meter Device

Works real well been using it for months its pretty consistent, I go back and test other stones every so often, it also is comparable to another tester I bought here on amazon and is reading the same results the other tester I have cost $200.00 and its the same findings.

As a professional jeweler that specializes in high end custom pieces, I hate to say that this tester is absolutely not accurate at all nor is it the easiest to use. For $100 I expected better.Smaller real authentic diamonds sometimes test as moissanite and larger moissanites often test as authentic diamonds.Moissanite will sometimes always read as Diamond on other testers, especially if it’s good moissanite but diamonds should never read as moissanite.In addition the prong can be weird to work with sometimes and no different prongs means if it doesn’t work for the piece you’re trying to test that you’re stuck with it. It would’ve been nice to see a few different prongs for properly working with different gem sizes.All and all, this is no different from the $20 tester you can get on here.

This dual diamond/moissanite tester is very accurate. I have found that most dual testers under $200 will not accurately and consistently test moissanite stones under .25ct. they will test them as diamonds. I have tested dozens of small moissanite stones as small as 10 points, and all tested as moissanite. The only negative I have about the tester is the half minute wait for it to warm up, batteries don't last long. You really need to use an AC adapter (not included).

I bought this jewelery tester so I can tell what is real and what is not from my own personal jewelery collection. Over the years I have bought a number of diamond stud earrings, and got some from a family member. Even I could no longer tell what was cubic zircon and what was real. Right out of the box, put batteries in, charged it up and put it to work on items I knew were real. It was accurate each time I ran the test. Even tested some costume jewelry, the device was not easily fooled! So far, I have to say I am pleased with this purchase, and hope it continues to do it's job! Although somewhat pricey, sometimes you get what you pay for! It's a little chunky, and you have to learn how to hold it precisely to get accurate results from testing. Keep that in mind.

A better one would be much more expensive— this one very good for price

This thing is so insanely inaccurate it blows my mind. I’ve tricked it over 10 times into reading my moissanite bracelets as diamonds and it gives different results every single time. I almost feel like it’s just a randomized beeping led. The only thing it’s good for is telling moissanite / diamonds from softer stones but there’s a $20 version of that available. I will be returning this piece of crap and getting a proper one

Works best on larger stones. Small stones were tedious and difficult to get a reading on, in some cases could not get an accurate reading. Good for home use to sort out jewelry, but I would not use professionally. I was glad I bought it to sort out my earrings and find what I thought were a missing pair of diamonds mixed in with some white sapphires.

Muy buen producto, servicio de envío rápido, bien empacado