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Your cart is empty.Product Description
Operation Methods：
Step 1：
- Put the 9V battery in. (not included).
- Take off the probe cap.
Step 2：
3. Turn on the switch, the power indicator is on.
4. Wait few seconds for the probe to heat up until another indicator is lighting up.
Step 3：
5. If you test diamond, you then need to turn on the number of lights corresponding to the indoor temperature and diamond weight.
Step 4：
6. If you test other gems, you'd better calibrate the probe before testing, Method: by placing the probe vertically on a piece of glass, then adjusting the light to 5, and then placing the probe on the gemstone to test.
Package Included:
1* Diamond Tester (battery not included)
1* User manual
1* Leather Pouch Case
1* Testing Platform
1* Cap
Test Result Analysis:
If lights >= 9 and have sounds, it is true diamond.
If lights < 9 and no sounds, it is not diamond.
If lights is 7 or 8, it is true crystal.
If lights is 6 or 7, it is true jade.
If lights is 4 or 5, it is glass.
Don't test metal，Don't wear gloves.
Antonio.
2025-09-03 13:23:05
This device test for conductivity. Diamond, Moissanite and Sapphire has a high conductivity rating. "Diamond being the highest followed by Moissanite. You can use this device to test for that in the above mentioned gem stones.
Veronica Merkerson
2025-06-27 18:24:29
Ok
stephanie
2025-05-29 13:24:14
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.
linda reno
2025-05-12 19:45:40
not very clear on how to use this machine. It says to hold it perpendicular to the stone but not how to readit. It says the lights tell you but it stays the same no mater what you do. I was sure I was touching a diamond and the light remained the same.
KarenMK
2025-03-30 14:14:03
The tester takes some time to get used to and I'm not sure if it is 100% accurate. It is a good tool to give you an idea if the diamond is real.
Lynne Snyder
2025-02-03 10:34:54
Tested on a GIA certified diamond. Tested on a fake diamond. Nothing. Cleaned them, warned them in my hand, made sure battery was good, made sure device was set as per instructions. Nothing!!! Tested on diamond earrings. Nothing.
Aloha Pia
2024-12-29 14:15:28
Easy to use. Works great and accurate. Great for home use.
Dutchess L Williams
2024-12-16 16:43:26
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 .
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