Alright, now we're going to be testing gold using the Acid Kit. The Acid Kit has typically six battles out of the six two art for testing platinum and silver we're not going to be using those right now. We're going to be using the ones that test gold from 10, 14, 18 and 22 card gold. Out of these four battles, the 14 card gold acid is the most used in the US because most of the jewelry come in 14 card gold. We could find 22 card gold in gold coins and 18 card gold sometimes in other jewelry. So let's see, we have here many pieces of jewelry from 10 card, 18, 14. We're going to be testing 14 right now. So we have a ring here, it's a wedding ring. Let's bring it, let me see. We're going to be testing on the surface of this ring. So I happen to know this ring is 14 card because it says there and I use a magnifying glass I can see clearly. Although this wedding band could be 13, 14, 15 cards, the only problem we have with this acid is that they will tell you 14, 10, 18, 22 cards but they don't test more accurately. If you want to have an exact count of the carrots and your jewelry or your piece could be 20 card gold, you're going to be guessing using these acids. So for that, you better go to the electronic tester. It's one of these that helps you not only to test more accurately the carrot of the piece of jewelry but also helps you to find jewelry that is not really gold, that is only gold field. It's got a plate of gold. So in those cases, if you want to test with the acid, you're going to have to scratch a little deeper into the jewelry, into the piece of jewelry because the plate of gold is going to be present and if you put the acid on it, it's going to show you gold although it is not really gold. Now let's talk about this one. This one is 14 card gold. That's what it says here, right? Let me clean it really well. And if I apply 14 card gold acid to a 14 card gold, a piece of gold, it shouldn't react. Means I put it on the surface, little drop and nothing should happen at all. Same color. Let's see if that happens here. Same color. I don't see any change so far. Now let me wipe it out. And there it is. The ring is almost same color, little shadow, a little reddish shadow. That could happen. That's still 14 card gold. But not everything, let me see for example if we want to test, these bracelets are 10 card gold. And we're going to be testing this one with 14 card gold to see. This is got a design so it's going to be probably a little harder to realize on the camera if there is any change. But let me try. Okay, you see the shade. So supposedly if this is a 10 card gold and I apply a 14, it is going to leave a dark shadow. Reddish shadow. Let's see. A little messy here. Well, it leaves a shadow that is reddish. That is a problem with the acid. Sometimes it's not too accurate and you have to double check with your electronic tester. Even of course with the X-ray, Floressense. Let's see. Now we're going to try something that you may come across once in a while that is white gold. You see, this is actually gold. Although it looks like silver, especially when you compare it to yellow or red gold, this is yellow gold, this is red gold and this looks pretty white. Many times you wouldn't say this is gold. The way you find out is by scratching some very tiny sample of the actual metal or this stone. Now, the size of this scratch is way bigger than it's supposed to be. Why? Because I have to show you the camera and make it noticeable. But if you are my doing it for myself, the scratch would be a lot less than this. Now this is 14 carat gold, white gold. We're going to be testing this with 14 carat gold acid. What would happen? Nothing. If I use 14 carat gold acid on 14 carat gold, nothing should happen. You see, the acid lies on top of the little pieces of gold. But there they are. Nothing happens to them. Now, if I test it with a higher-carat acid, it should fade away. It should disappear pretty much immediately. So we put some acid there, 18 carat gold acid on a 14 carat gold and we will see that it disappears. The scratch disappears immediately. There's nothing there. I move some more of the acid to show again that the scratch disappears. On the other side you have 14 carat gold acid. On top of 14 carat gold, it doesn't make a change. So this is the way you test for gold purity using the acids. That's it.