Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Checker Pen Professional for Jewelers, Gem Tester (Jewelry-Only Detection)

Works Perfectly

Works great for the price. I used it to test a stone I found and was able to quickly determine that it was glass, not a diamond. It’s simple to use and gives clear results. Good option if you need a basic tester without spending a lot.

Works well.

Works fine so far.

Received product as described. Works very easy with easy-to-understand directions.

Kind of fun to play with for the price. I'm not sure I would bet my life on the accuracy of the results. It's fickle. I think it's kind of fun for reassurance, but if I really wanted a true answer, I would probably still have to take it to a professional.

Love this diamond tester. It does give accurate reading and is easy to use.

I got no manual with it says to read it first so how do i read something I never got , looked like it was opened and used before i got it , but it does seem to work ok so i will keep it , I imagine someone bought it used it then returned it but some folks are like that but like i said it works okay.

Nice true

Broken nib and battery don’t work

Bad product

Gems stone per kaam nhi krta

Not working