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<p>[QUOTE=&quot;Gam3rBlake, post: 5226042, member: 115909&quot;]Yeah it’s an acid so it actually eats into the coin itself. You can clean up the liquid acid but the damage is already done.</p><p><br /></p><p>With silver the liquid will turn red, with other metals it changes to other colors so you can identify if it’s silver or not. It can also identify an approximation of the purity of the silver.</p><p><br /></p><p>They also have gold acid testing kits. Because gold is a non-reactive metal the acid won’t do anything to it. But other metals it will chew right through. Including silver.</p><p><br /></p><p>So if you put a drop of it on a real gold coin it doesn’t do any damage. But fakes it destroys. Gotta love that![/QUOTE]</p><p><br /></p>

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