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Old 21st December 2012, 10:21 AM   #48
Jean
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Join Date: Jun 2009
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I found a recent and interesting article about the various types of ivory at the following address:
http://stoneplus.cst.cmich.edu/zoogems/ivory.html
Nothing very new in it but a good summary with references and it confirms the dotted line and the higher density of hippo ivory (and spermwhale ivory) than elephant ivory especially. It also says that Schreger lines are only found in elephant or mamooth ivory
Regards

Last edited by Jean; 21st December 2012 at 12:17 PM.
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