Diamond Testing Kits Gem Pen Gemstone Jewelry Tester Tool,Portable Electronic Diamond Tester Pen Jewelry Selector LED(Black)

As described and easy to set up though batteries for use are not included.

Not super robust but good tool comes with case.

Does exactly what it needs too works well

The instructions were badly spelt and bad grammar. The instructions were at best useless.

This is actually really good - I have a mixture of items some I know as diamonds others I know are simulants or paste and a few I wasn't sure about this little tool gets it spot on!The important thing to do is make sure you calibrate it as per the instructions. One reviewer posted a video showing them moving the dial to force the gadget to bleep and then states it doesn't work! RTFM - as they say ...I highly recommend this product - reasonable price and if you google this particular model its used and relied upon a lot.

This machine will not give a correct reading unless it has a fully charge battery, preferably a disposable lithium one. Even then it is not very sensitive and needs to warm up fully and at least four bars lit on the display before using.

Easy to work love mine i would highly recommend it 👌

This works very well and I am very pleased with it