Your instincts will shine through hdesousa.
You asked for any info on these—none from me, I have never seen anything like these smaller ones
I agree that shellac is one of the oldest uses of any varnish type materiel used and that it is in fact alcohol based.
I am looking at the brush strokes— kindergarten imho. There are several strokes on each petal. They may have been made by children—I hope not.
The bigger one that you show in your last image is in a league by its own.
Marble—On!!