I got this at the end of Dec, 2021, so I have it for about 2 months. I have used this only 3-4 times and have been keeping it very well. But now the tester unit is faulty, I can't test anything with it.. While I am testing a stone, the needle goes all the way to "diamond" & it stays there. When I turn off the machine, the needle goes back all the way to the left "glass". But as soon as the red light stops blinking, the needle goes all the way back to the right "diamond" again. It stays there & won't move anywhere while the machine is on. I don't think the problem is the probe because it's the same even when the probe is disconnected.
Verified purchase: Yes | Condition: New
Bought 12/21. By mid-January, the needle would go to the diamond/Moissanite setting when it started up, but it still read accurately on previously-tested gemstones. Today, I turned it on, it did go to the glass area, then swung back to the diamond area, but it no longer reads any stones or glass. I don't know if the probe no longer works, or just the tip is damaged. I've not used it a lot, and have been careful with it. After spending so much for it, this angers me. It should last longer than this.
Verified purchase: Yes | Condition: New
I'm not sure if all presidium gem tester two's are the same, but the one I received couldn't make up it's mind on what gem it was reading. I tested gemstones over and over and kept getting different readings. Before I returned it, the reading stuck all of the way to the right and wouldn't come back.
Verified purchase: Yes | Condition: New
Before this purchase: I watch many of the YouTube videos, I asked many questions, the answers convinced me of the product. After I received my New Presidium Gem Tester II, I was surprised with the RESULTS. I have collected a GOOD portion of loose Gems trough out my life, I was surprised of the effectiveness of this Gem tester. Thank you.
Verified purchase: Yes | Condition: New
This little machine is very helpful and identifying gemstones. It’s easy to use. I was very satisfied with my purchase.
Verified purchase: Yes | Condition: New
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