Here are some rosettes I'm working on at the moment.   These are all about dynamic symmetry and each square is 2/3 ratio to the next into infinity, though it's just implied... I can't really make the pieces that small.   Ebony, padauk, and maple are the materials.  

This rosette was just brushed with hide glue to hold it all together.  It will then get planed flat and be ready to install.

dynamic rosette padauk.jpg