After a question about the first image in page one here, i had a look at the file.
You can test it yourself here without the texture images.
I actually like this blackish look too.
I don't know what i have been smoking then(!) but it is mostly 2 power fractals and a warp node actually doing the work.
The fake stones are actually absent because the "Surface layer 02"does have "smoothing on"...
So yeah it is a fake fakestone test...Doh!
With some additions the file could work without the compute node too.