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๐ Test with confidence, invest with clarity โ your jewelryโs truth revealed instantly!
The Purity Testing Kit by GTE is an all-in-one digital solution designed for professionals and enthusiasts to accurately test and appraise gold, silver, platinum, diamonds, and gemstones. Featuring a fast karat tester, a digital diamond detector, a safe GTE touchstone, and a bonus acid neutralizer, this kit ensures precise, non-damaging analysis in seconds. Highly rated and trusted, itโs the essential tool for anyone serious about jewelry investment and authenticity verification.






| ASIN | B0BY3N4KBD |
| Best Sellers Rank | #7,269 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #4 in Jewelry Gold Testers |
| Customer Reviews | 4.3 4.3 out of 5 stars (617) |
| Date First Available | March 10, 2023 |
| Item Weight | 1.59 pounds |
| Item model number | GTE DIAMOND TESTER |
| Manufacturer | GTE |
| Product Dimensions | 8 x 8 x 8 inches |
E**S
Good kit for the price ๐
I bought this to test my metal detecting treasures, mainly gold and silver jewelry. It arrived quickly and well packaged. I tested several types of gold and some silver and it did fine. I had some 10 k gold that didnโt dissolve fast in the 14 k acid but instantly in 18k acid so maybe the 14 acid is old or Iโm doing it wrong. Havenโt tried the diamond tester yet, but will. In all, happy with my purchase so far. Thanks ๐
E**A
Works great
Great starter kit. I think it needs a storage case tho, apart from that itโs great
W**O
Worth the money, but find an alternative stone
For the price, this kit is decent. The acids, diamond tester, and loupe make it worth it. Even if the last two are of cheaper quality, they get the job done. As someone just starting out with jewelry, Iโd recommend for beginners. However, the stone is crap. Other reviews mention that the acids donโt work, but Iโd bet my money that itโs really the fact that the testing stone is actually glass. It doesnโt scratch well, and tests awfully. If youโre looking for an alternative, I found a real stone one under the SE brand for less than $10. Itโs tiny, but tests miles better than the glass they provide in this one.
D**R
Easy to use,and accurate. Good protection fakes
This is a great for testing gold, silver, and diamonds to make sure,that what you get when investing in these items is genuine. It is unfortunate that there are individuals out there that try to sell you things that are not genuine or are less than what it,advertised. You really have to be careful and protect yourself from these individuals. This kit allows you to do this.
T**H
Work great
Love the product world great!
S**I
Follow directions and it will work for you
This is a very comprehensive kit for easily testing your thrift store finds. It comes with a very reliable diamond tester that I know works because I've tried it on a real diamond ring and a CZ ring and it was obvious the way the lights work that it could tell the difference. It's amazing that it contained everything it did for the price, I think it's a great value. The only thing I'm missing now is a small accurate gram scale. No it did not come with the carrying case it came in a plastic bag, the carrying case that it is in I bought right here on Amazon.
R**R
Metal Testing Drops do not work
Unfortunately what I intended to buy this for which is the drops for metal testing, they do not work as expected. I am unsure if they are expired or if they just donโt work properly but they do not give me the results I was looking for and instead the metals start to almost float once the drops are placed on. I have tried this with jewelry I know is pure gold and not questionable yet I still came across this issue :( looked to get a partial refund at least considering I like the microscope and diamond tester it came with but it didnโt give me the option to.
P**S
The acid testing seems to work correctly however the diamond tester is faulty
I've tried everything to get the diamond tester to work. I've even went on YouTube and got the exact directions for it and it still doesn't work. All it does is beep. I have turned it all the way down and it still doesn't work correctly. The metal testing seems to work. I have tested it with gold and silver. The gold definitely works correctly. Silver acid ate through the cap so make sure you store it up right
S**S
Testing kit
Great kit and fast delivery
B**L
Exactly as advertised, very happy.
Exactly as advertised, very happy.
I**O
Strumento per durezza pietre
Un pochino baracchetta
B**S
Perfect
Parfait, fonctionne parfaitement
A**R
Bottles
The bottles were wet, I assume they were leaking.
Trustpilot
1 month ago
3 weeks ago