Thanks. These two pics are of some wood from projects that I’ve done. They are not actually physically textured, but have an internal grain structure that reflects the light back showing an undulating pattern. Chatoyancy is the term is the term for the 3D illusion. It shows best when there is a polarized light source. The photons bounce off best perpendicular to the cells in a reciprocal angle, like a cue ball bouncing off a rail. The light is absorbed more as it gets closer to the endgrain. So the reflection appears to move around if either the light source or the viewer moves around.
The first is a fiddleback figure in a Makore table top. And the second is the outside of a large bowl I was turning from a huge American Elm while the wood was green, or freshly cut. These colors fade into a light tobacco color as it dries.
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