We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.
DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
💎 Spot the real sparkle before anyone else does!
The MIUONO Diamond Tester is a professional-grade gem testing pen designed for both novices and experts. Featuring rapid, non-destructive testing with clear light and beep indicators, it accurately distinguishes genuine diamonds from imitations. The kit includes a 10x jeweler’s loupe, tweezers, and a 9V battery, all housed in a portable carrying case—making it the ultimate tool for precise, on-the-go diamond verification.
| ASIN | B08F21JJGR |
| Batteries | 1 9V batteries required. |
| Best Sellers Rank | #67,606 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #25 in Jewelry Diamond Testers |
| Customer Reviews | 4.1 4.1 out of 5 stars (750) |
| Date First Available | July 31, 2020 |
| Item Weight | 8.1 ounces |
| Item model number | diamond tester |
| Manufacturer | MIUONO |
| Product Dimensions | 9.37 x 3.11 x 2.01 inches |
B**D
Totally satisfying
As described
T**T
FUNCTIONAL DIAMOND TESTER
PEOPLE PEOPLE PEOPLE: YOU MUST READ INSTRUCTIONS AND PROPERLY CALIBRATE AND IT WORKS PERFECTLY FINE. I'm seeing people say it doesn't work, can't tell difference between stones and moissanite and diamonds BUT IT'S PROBABLY BECAUSE THEY AREN'T PROPERLY CALIBRATING. AFTER PROPER CALIBRATION. (You have to read the instructions haha) All my diamonds and my moissanite tested as diamonds as they both should. My topaz did not register as diamond so that means IT WORKS properly.
T**S
Works well and worth the money.
The diamond tester is easy to use and is fast in identifying real diamonds. I used it to test real diamonds but also tested it on lab created diamonds and cubic zirconia as a test. It successfully identified the diamonds so the accuracy and functionality was as expected. It’s worth the cost for anyone wanting to confirm the whether a diamond is real or not.
B**T
Good service
It does the job
G**H
Works ok. Not great.
Not ideal. It requires quite a bit of practice to get it calibrated and use affectively. But if you follow directions and use it properly it does work.
P**E
Came with a "DEAD" battery!
The unit works; however, I believe it was a return or a used one, the diamond tester was upside down in the carrying case that comes with it. Also, the tip that you place on a diamond has an individual little plastic/rubber slip on cover that was off, probably because the tip was sticking out of the carrying case. The case is simple and self-explanatory as it has a hard little section portioned off inside for the tip of the diamond tester to be placed inside while not in use. I should return the unit because the battery that came with it was "DEAD" it didn't have enough power to even turn the unit on. I had to buy a new 9V battery which cost me $7.00 and some change. I choose this particular unit because it came with a battery and then I end up having to buy one as I needed to use the unit, plus I wanted to make sure it was working. The diamond tester is easy to use, but because of the poor handling of the unit and the dead battery I can only give it 1 star.
A**R
Works great
Love this
B**Y
Check my jewelry
Love it
T**S
Useful at an affordable price. Hope this lasts.
ر**ي
المنتج جودته سيئه
Trustpilot
4 days ago
3 weeks ago