There's lots of great rocks around my house and I've been banging on them with a floor chisel and a Dremel. This approach sort of works -- but it's slow going and not really what those tools are intended for.
Trouble is, a decent stone chisel (the tool intended for this task) runs about $120 - $140 for a single one: https://trowandholden.com/carbide-comfort-grip-hand-tracer.html From what I see on contractor's forums and the Interwebs, it really is worth it to bite the bullet and get the good tools. Not sure if I believe that, but these guys doing the posting are cost-conscious, do this kind of work every day and know a lot more than I do.
There are many types of chisels -- hand sets, points, tracers, chippers, etc. Of those types, each chisel can be found in different sizes (1" to 2.5" tracers, for example).
Question is, before I drop $500+ on a set of tools I'm not even sure about (what's the difference, really, between a hand set and a tracer?), what's the #1 most-used hand tool in the arsenal that will help me split & shape natural, bluestone-type rocks?