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<p>[QUOTE=&quot;Bronwen, post: 2293790, member: 5833&quot;]I have some carved tagua nut among all the stuff in my display cabinet.&nbsp; It&#039;s modern work, so maybe material behaves differently, but what I see under UV:&nbsp; Where some of the brown outer layer has been left on it still looks dark brown.&nbsp; Where it has been pared down only a little, it looks the same color as the rest of the interior in ordinary light, but returns the UV purple back really brightly.&nbsp; Under ordinary light the rest of the interior is sort of a light caramel color.&nbsp; It looks whiter under the UV.</p><p><br /></p><p>I&#039;m not looking at stuff that&#039;s this brown to start with, so color of brooch under UV is consistent with the whitening I observed, just starting from a different baseline.</p><p><br /></p><p>I never think of tagua nut for pieces this old.&nbsp; Has it been used that long?[/QUOTE]</p><p><br /></p>

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