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<p>[QUOTE=&quot;KSW, post: 4383135, member: 8708&quot;]This is my take on it. I am very amateurish at testing so no doubt someone more experienced will be along to help.</p><p>Wear gloves and eye protection.</p><p>When testing silver using the amber colour (nitric) acid you are looking for a colour change.</p><p>The red colour indicates silver, the brighter the red, the higher the fineness. The top one in the photo below is silver, the others aren’t. If it’s brown then it’s low fineness. You need good light to see the red. </p><p>[ATTACH=full]367982[/ATTACH] </p><p><br /></p><p><br /></p><p>You can also use 18k gold acid to test silver.</p><p>It does this if it’s silver. It only works with 18k acid.</p><p>[ATTACH=full]367983[/ATTACH]</p><p><br /></p><p>Gold is tested by seeing if the sample stripe disappears.</p><p>If it disappears with 9K acid then it’s lower carat than that or not any gold at all.</p><p>If it disappears with 14k acid then it’s less than that etc etc.</p><p>Don’t get hoodwinked by aluminium (presume that’s what it is) as it won’t disappear when you put the acid on.</p><p>Heavy plating will test as gold or silver so if in doubt get a jeweller to check for you. Having said that I’m always worried they will damage my jewellery so I rarely do![/QUOTE]</p><p><br /></p>

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