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<p>[QUOTE=&quot;Any Jewelry, post: 496575, member: 2844&quot;]It cracks and yellows in direct sunlight, spotlight, or near a heat source, which is why that is always avoided. But keeping it in the dark is another cause of yellowing.</p><p>Keeping it out of direct light, in relatively low light, is best. My antique ivory is in north facing rooms (northern hemisphere), not near windows or artificial light sources.</p><p>I have had the items in the photos I showed before for ca 40 yrs, and I know they were on display in a similar way for a long time before that as well.</p><p><br /></p><p>Some Byzantine ivories are still pretty white because they have been on display in churches etc as subjects of veneration for most of their life, ca 1000 yrs:</p><p><img src="https://s14-eu5.startpage.com/cgi-bin/serveimage?url=https%3A%2F%2Fnews.artnet.com%2Fapp%2Fnews-upload%2F2015%2F07%2Fbyzantine-relief.jpg&amp;sp=007c66db35d5193059848064f3b70a56" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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