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<p>[QUOTE=&quot;-jeffB, post: 2109559, member: 27832&quot;]The discussions I&#039;ve seen indicate that Apple&#039;s composite is still 75% gold <i>by weight</i>, which makes it 18K by definition -- but its <i>density</i> is much lower than standard 18K gold (perhaps by as much as 60%), meaning that an object of a given <i>volume</i> will contain less total material (and, thus, less gold) than if it were made of conventional 18K gold.</p><p><br /></p><p>I would think that lower density (and lower total weight) would be a <i>good</i> thing for a watch.</p><p><br /></p><p>As for the &quot;atoms closer together&quot; bit, that sounds like woo.[/QUOTE]</p><p><br /></p>

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