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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.






| Best Sellers Rank | #10,256 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #9 in Jewelry Gold Testers |
| Customer Reviews | 4.3 out of 5 stars 696 Reviews |
C**Y
"Excellent Purity Testing Kit with Outstanding Customer Service!"
I couldnโt be happier with this Purity Testing Kit! It has everything I need to test diamonds, gemstones, and metals like gold, silver, and platinum. The kit is comprehensive, with a digital diamond tester, various acid solutions, and clear instructions, making it easy to use even for a beginner. The real highlight, though, is the customer service. When the tip on my diamond tester broke, I reached out about the warranty, and they responded promptly and professionally. True to their word, they sent a replacement right away, and it arrived quickly. The company truly stands behind their product, and that gives me so much confidence in using this kit. This kit is reliable, accurate, and backed by excellent customer support. Highly recommended for anyone who needs a quality testing solution for jewelry and precious metals!
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.
T**Y
Ease of use
This has been an amazing tool for mine and my husband's hobbies. So easy and care free
H**H
Easy to use precious metals test kit Bangle bracelets 14 kit!
This test kit gave me undeniable results ! Bangles were 14 k ! Glad I bought test ! kit !
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.
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
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.
B**L
Exactly as advertised, very happy.
Exactly as advertised, very happy.
R**R
Speedy delivery
Great kit cant wait to try
I**O
Strumento per durezza pietre
Un pochino baracchetta
T**H
gold tester
Nice kit but missing the 9k test
G**H
Amazing
Delivery was a little slow but the product worked great
Trustpilot
4 days ago
5 days ago