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Posted By: Koo Schadler
Total Posts: 72
Joined Date: Feb 14, 2014

Hi George,

A fellow tempera painter recently told me that "Afghan lapis lazuli will grey out" with age.  I understand that less well-washed grades of lapis have much less blue chroma and appear greyish from the start; and I've heard that acidic conditions can dull a genuine lapis lazuli to grey.  But I haven't heard of a high grade lapis lazuli pigment turning grey merely from aging.  Your thoughts?

Thanks, Koo

Posted : Jul 29, 2017

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