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<p>[QUOTE=&quot;MrNate, post: 2349982, member: 5515&quot;]I agree that&#039;s true when dealing with items plated in copper. But for other base metals, the ice cube test should produce noticeable differences. See the chart below that shows the thermal conductivity of metals (think of thermal conductivity as the ability to move heat/cold through the metal and the rate of transfer). Notice the similarity between copper and silver, but the much lower numbers for Brass, Nickel, and Stainless. Based on the images, I would rule out copper as the base metal based on how it looks. If the base metal is nickel, you would see a much slower melt of the cube, and a much slower transfer of cold to the farther points of the cup. I&#039;ve found that the ice cube test can be pretty helpful as a potential indicator of silver. </p><p><br /></p><p>[ATTACH=full]260991[/ATTACH][/QUOTE]</p><p><br /></p>

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