Previously made it from random objects and retouching the filtered image was a larger part in gimp.
This instead, is based on the proportions of the Fibonacci spiral.
However that results in a totally unnatural look, contrary common misinformations.
It was drawn in inkscape with gradient meshes, but after a full rotation the rendering got so slow that used raster copies further on. So this time no svg source (as it was quite sloppy as well).
Using a recent stone filter in the background.