JZK Portable Electronic Diamond Tester Pen for Diamond, Sapphire, Ruby, Crystal, Agate, Jade, gems Multi Gemstone Precious Stones Hardness Test Tool, Diamond Selector II V2

I tested this diamond tester on a real diamond, and it worked exactly as expected. The results were quick and accurate, and the indicator lights made it very easy to read. It’s lightweight, simple to use, and ideal for checking gemstones like diamonds or rubies at home. For the price, it’s a great little tool that does the job well — definitely worth having if you want to test your jewellery.

Initially I was skeptical due to the very mixed reviews, however my experience of the item was very positive, I tested various stones as per the instructions, I had a ring that looked like diamonds to me but without testing, there was no way to be sure, I first tested items that I knew to be diamonds, followed by stones that obviously were not, the tester was able to confirm my suspicions as per my video that the 3rd item tested does contain diamonds. I think this is a great bit of kit for the money and the case it comes with was also great.

Very accurate work well. Value for money

This product does not come with a battery so be prepared to buy one or order one when you make a purchase, I found the instructions overall quite hard to understand and ended up having to watch some guidance videos on YouTube. Even after watching videos and reading the instrucitons a number of times I did not trust the results.

I have loads of old jewelry and often pick up stuff from flea markets. The diamond tester is easy to use, accurate, and good quality.

Does not work don’t waste your money. Wish I checked most recent reviews. Everyone’s saying the same thing. On mine after 3 hours the *lamp on ready ok* LED light didn’t turn on *just the lamp on batter ok* LED so didn’t get to test it out. And it didn’t come with a battery. So wasted my money on the faulty diamond tester and on a battery.

Useful for diamond testing

Great qaulity, fast delivery