Gold Silver Jewelry Tester Appraisal Kit 10K 14K 18K 22K 24K Platinum Palladium Test Precious Metals 999 925 Scrap

This is the only brand that I trust. I've tried other cheaper brands and have gotten bad results. False positives and negatives. JSP is the best...

The kit arrived quickly and well-packaged with everything shown: multiple clearly labeled JSP testing acid bottles (10K through 22K/24K gold, silver, plus the neutralizer), two large premium 2x4" testing stones with non-slip backing, and easy-to-follow instructions. I’ve now tested several pieces of gold jewelry in different karats (10K, 14K, and 18K), and the results were consistent and matched the hallmarks where present. The color reactions are easy to read, and the larger testing stones make the process much safer and less messy than smaller stones I’ve used in the past. The neutralizer works great it quickly cleans the stone between tests so there’s no cross-contamination, and the stones wipe up nicely for reuse. *NOTE* PLEASE USE IN WELL VENTILATED AREA

Very easy to use simple instructions, works great!

Everything about this kit is excellent, except for one tiny detail – when I opened one of the scratch plates for testing gold, it had some residue or some type of crud on the surface – it wasn’t the clean black testing plate I expected and I’ve seen before. Luckily they provide three or four of these testing plates, which is nice. The kid includes acids for 10K, 14K, 18K, 22K platinum, silver, and a neutralizing acid. I’ve already put this into use and it has revealed that a necklace I thought was just gold tone is actually 14 karat! I was using years old acid to test my goal which is a no no. You should be replacing your gold and silver testing acid every six months or so. Well worth the investment, especially if you find yourself in a situation like I did – especially with unmarked metal, You might be in for a lovely surprise. If you don’t know what the gold parody might be, lightly scratch the piece on the stone and start with the lowest purity acid - 10K. If the acid doesn’t destroy that gold scratch, move up to 14K. Then move up to 18K (you lucky lucky dog!) if you don’t see any smoke or gold disappearing from the initial tests (the acid will destroy the metal if it does not have the level of purity it’s test testing for.)

Would buy again great product

Worked great was able to test my gold

I was a bit disappointed in this product. We have bought acids from them before, but the 18K did not perform as previous bought. The Silver Acid is shown to be red in the instruction manual. However, when you use it on a black stone, the color does not show up. Perhaps instead of sending two black stones, maybe one should be white, so that the colors show up better. It does if you use it directly on the product itself. I prefer not to do that as acid has a tendency to leave a mark if the item is not good. This does have effect on costume jewelry and can ruin a piece. However, it did work for 10K and 14K. The stones also are different from our original stone and I feel it doesn't quit react as well. It has a slightly soft top layer and I am used to a solid hard layer. I was also expecting larger stones, but that was my fault for not reading closer. I will keep this kit as a backup for when I travel, but will still use my regular stone at home. I did like the variety of acids, which had some I never had before. It is ok for a starter set.

Used numerous times, instructions are very clear and understandable

Todo bien. Gracias.

Excellent testing kit

Très bon et prix juste

not sure what people are complaining about. that thing works as perfectly as my previous kit which cost me much much more than this. the stones work flawlessly and I have failed to read 2 stones were included.. a black and white one, which is awesome. and to the people complaining the stone damages the jewelery.. all stone does.. I been doing this decades, you were just not looking close enough. so YES, if you rock back and forth a jewel on an abrasive stone it WILL leave a mark, there are techniques to rub the inside of rings, the product should not be judged on your lack of knowledge and skills.

👍👍👍