Rick:
I think this may be an artefact of how I manipulated the image in Photoshop. Sometimes using the "sharpen" tool can create distortion and bring out patterns that aren't really there. The cross hatching is not visible in the original image.
The concentric rings and central vein suggest that this example is a tusk (tooth) rather than a rib.
Ian.
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Originally Posted by Rick
I'm seeing cross hatching on the left bottom corner in picture two which brings up a question ; do all ivory types (Marine ivory included) show this distinctive pattern ? 
Panday , that Sea Cow ivory looks very porous in cross section .
Interesting .....
Rick |