Dupeakya Professional Diamond Tester, Gem Tester Pen Portable Electronic Diamond Tool for Jewelry Jade Ruby Stone

Great item! No more guessing on real or fake Diamonds.

Leads you to believe it will test precious stones and it does read them. But does not show what type of stone or quality of it .. and on a few occasions gave false readings. Does test diamonds as a diamond leaves no doubt that a diamond is real or cubix but not sure when it comes to a natural stone found wether they are or are not a diamond or quarts .

Very good helped me a lot

Did the job

En ocasiones se vuelve un poco loco. Pero funciona bien

This does not work as described. It is not able to detect other gemstones, such as rubies, sapphires, amethyst, etc. It did detect my diamond, but it also appeared to think my cubic zirconia ($30 from Walmart, definitely not a diamond) was a diamond, as well.

Pro's: I tested my vintage & Antique jewelry and if you're patient & have a steady hand it works great. Cons: Difficult with tiny stones. If the tester touches metal it will buzz and is hard to test tiny stones. Also, there are NO instructions for testing results for other than diamond testing. I looked through other sales and found one seller that gave good info for what results to expect from other precious stone testing. This seller should include this info in their ads. I was a bit regretful at not having purchased from the other seller because of the good info and for the same price I would have gotten a 60x magnifier. All in all though, this tester does the job and i do recommend it.

Ok