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<p>[QUOTE=&quot;Bronwen, post: 2720831, member: 5833&quot;]Crosshatching</p><p>[ATTACH=full]276047[/ATTACH]</p><p><br /></p><p>Parallel [ATTACH=full]276048[/ATTACH]</p><p><br /></p><p>Yellowing &amp; splitting</p><p>[ATTACH=full]276049[/ATTACH]</p><p><br /></p><p>Splitting without significant yellowing</p><p>[ATTACH=full]276051[/ATTACH]</p><p><br /></p><p>Yellowing without splitting.&nbsp; Notice yellowing is greatest on highest surfaces where plaque has been touched more.</p><p>[ATTACH=full]276050[/ATTACH]</p><p><br /></p><p>Direct experience with the substances that can look like ivory is also helpful in recognizing the difference.&nbsp; Celluloid &amp; related materials are good visual mimics of ivory &amp; also yellow with age &amp; handling.</p><p><br /></p><p>[ATTACH=full]276052[/ATTACH] [ATTACH=full]276053[/ATTACH]</p><p><br /></p><p>The front of this cameo has clearly been molded, not carved; the reverse shows striations that are much more unbroken than those in ivory.&nbsp; In the hand, the piece is too light in weight for ivory &amp; sounds like plastic when tapped with a fingernail.</p><p><br /></p><p>The Chinese produce tons of stuff in ivory colored resin that can even have some hand work on it.&nbsp; I haven&#039;t seen any that has the yellowing &amp; splitting or any kind of &#039;grain&#039;, although it&#039;s probably out there or soon will be.[/QUOTE]</p><p><br /></p>

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