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<p>[QUOTE=&quot;Bronwen, post: 4253513, member: 5833&quot;]Think this is only good if you have a piece you strongly suspect of not being solid gold or heavy gold plate.&nbsp; If a metal is changed by the application of household vinegar, it is definitely not solid gold.&nbsp; If this were a championship series, this would be the first round: gold/not gold.&nbsp; But you want to know is it 10K?&nbsp; 14K?&nbsp; 18?&nbsp; Good acid can tell you that.&nbsp; You can also test silver to some degree with these kits.</p><p><br /></p><p>Notice she doesn&#039;t say how to remove the discoloration caused by the vinegar.</p><p><br /></p><p>&quot;you should put a stopper in your drain so that there is no chance of losing it.&quot;</p><p><br /></p><p>There speaks the voice of experience.</p><p><br /></p><p><br /></p><p>My little cheapo kit did not have any printed material beyond labels on the bottles.&nbsp; I only had an idea of how it all works from watching my jeweller do it.[/QUOTE]</p><p><br /></p>

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