Is it Gold? Testing Gold with the Acid Test Kit

Рет қаралды 14,573

Жыл бұрын

I recently found what I thought might be a gold ring while metal detecting at a local beach. The ring was quite heavy, with no signs of corrosion, but without a visible hallmark.
It passed the magnet and the vinegar test, so the next step was to use an Acid Test Kit.
I'm no expert on using this kit, but based on my findings (confirmed by a jeweler), it looks like I did OK!

Пікірлер: 31

@dameanvil 2 ай бұрын

0:25 💡 He mentions he has never used an acid kit before and explains its purpose. 1:08 🔍 He explains how other metals are mixed with gold to create different karat values. 1:36 📊 Lists common gold karat values and their corresponding gold percentages. 2:23 🪙 Shows various rings he found while metal detecting, sorted by suspected gold content. 3:49 🧪 Describes the acids used in the test: 10, 14, 18, and 22 karat nitric acid. 4:08 💵 Mentions the cost of the kit and its components. 4:56 🧫 Explains the testing process: scratch gold onto a stone and apply acid to determine purity. 5:55 🪛 Begins the test by scratching the first ring on the test stone. 7:02 🪙 Scratches subsequent rings, noting the differences in the lines they leave. 8:52 🧪 Applies the 10, 14, 18, and 22 karat acids to the scratched lines. 10:13 🔬 Observes the reaction, noting that the silver line has mostly disappeared. 11:11 🕵‍♂ Discusses initial results, indicating different gold purities based on acid reactions. 12:03 💍 Identifies one ring as likely being 18 karat gold based on the acid test results. 12:54 🧪 Notes that the 22 karat acid ate away all non-gold impurities.

@user-ki3xj5cq5s 23 күн бұрын

great video thanks for sharing

@todddenio3200 Күн бұрын

What about if the jewelry is marked 14k but is suspected of being plated brass? Should a person remove the plating first with a file and then test it or is plating thin enough to be of no concern?

@bartkarssen755 Жыл бұрын

I have two questions. Is it true you first have to pop a hole in the opening before using? And the colors of the caps look very old when I got them, also the wrap on top was brown and it was leaking. Is this normal?

@coilsandcoinsdetecting Жыл бұрын

There are many different kits, and they’re likely packaged differently. I didn’t need to put a hole in the top of the bottles - I simply unscrewed the cap and they were ready to go. The acids can weaken over time if they’re not kept in a cool, dark place, so it’s possible they’re old and haven’t been stored correctly? Do the acids react when you put a drop on a scratched gold line at all?

@thetreasurehuntingboomer Жыл бұрын

I have a kit still not great at it..have a presidium gem tester too that's come in handy. Diamond testers are good too

@coilsandcoinsdetecting Жыл бұрын

The acid kit is a bit hit and miss, but it gives you a rough idea of what you have. I’ve also been thinking I should get a diamond tester.

@thetreasurehuntingboomer Жыл бұрын

@@coilsandcoinsdetecting diamond testers are great the presidiums are even better but exy .. I buy and resell stuff used profits to buy mine did same for my detector

@seadoocruiser1863 Жыл бұрын

Great video Steve! How do you clean the stone with all the scratchings on it for future tests?

@coilsandcoinsdetecting Жыл бұрын

Glad you liked the video! To clean the stone you use a little bit of the 22k acid and spread it over the scratchings and leave it for an hour or so.

@PParks6973 Жыл бұрын

Really interesting, have just been wondering about these kits so thanks. Now why do you wear gloves when digging in dirt but no gloves when handling acid? 😂😂

@coilsandcoinsdetecting Жыл бұрын

@@PParks6973 that’s a really good question - 😂. I wore gloves when I cleaned the stone after the video, but probably should have worn them during the video too… 😩

@JasonOdonnell-qp6ju 8 ай бұрын

What if your scratch doesn't dissolve but the lines get darker?

@monelleny 4 ай бұрын

What does it mean if the lines for 14k gold fade a lot and turn reddish?

@coilsandcoinsdetecting 4 ай бұрын

Likely the object is gold plated, and the base Metal is a copper alloy.

@janeh4962 6 ай бұрын

Thanks for the video! When you took the mystery ring to the jeweler, did they confirm 18K?

@coilsandcoinsdetecting 6 ай бұрын

It was 14k according to the jeweler.

@1986subway Жыл бұрын

What if about 30 seconds after applying the 22 karat acid it starts to dissolve the sample?

@coilsandcoinsdetecting Жыл бұрын

If the 18k acid doesn’t dissolve it after 2 mins, but the 22k dissolves it after 30 secs, then it’s more likely to be 18k. I’d say if the 22k acid hasn’t dissolved the sample too much after 2 mins then it’s more pure than 18k…

@1986subway Жыл бұрын

@@coilsandcoinsdetecting well that's weird these are 1 oz American eagles. they're supposed to be 22 karat 🫤

@coilsandcoinsdetecting Жыл бұрын

@@1986subway unfortunately it’s not an exact science and open to interpretation. 22k gold coins should be 22k, however there is always a small margin of error I guess. The only way to know exactly what karat they are is to have them scanned with an XRF Scanner (high end gold dealers and jewellers use these).

@Happycat8385 7 ай бұрын

Anyone know what it means if I test something and it leaves a solid line from where I scratches but while the acid is on it there's very tiny bits of gold/metal dust that floats in the acid but like I said it's very little on this particular piece and after I neutralize I can see the line from where I scratched in tact....any input would really really be appreciated

@user-yo4yi5ip7q 9 ай бұрын

How to make this acid solution

@coilsandcoinsdetecting 9 ай бұрын

You can buy these test kits online.

@user-yo4yi5ip7q 9 ай бұрын

@@coilsandcoinsdetecting yes

@marlitachiu6495 5 ай бұрын

May I know where we can buy the solutions or the kita?

@nehajulit8025 9 ай бұрын

Confusion one by one check it

@yosefnikzad3269 5 ай бұрын

You contaminated all solutions with 22k acid .

@todddenio3200 Күн бұрын

I must have missed something. How did he contaminate all of the solutions?

@bretdurisin6525 7 ай бұрын

Hey, mister. You can really talk. I have no idea what you are talking about. Finally, you start showing how the testing is done. But you never stop talking. You are pretty sloppy also. Keep knocking everything down. Well, thank you anyhow......

@coilsandcoinsdetecting 7 ай бұрын

Well thanks for watching - I think…