I’ve been carving limestone for the first time this spring, along with my soapstone.
Limestone is much different than soapstone to work with (drier, grittier), but better for fine detail and lettering.
I carved an address marker for myself from a piece of Indiana Limestone. It features a snake, turtle, and salamander.
Good woodworking tools will be sufficient for many carvings. Basic hand chisels, hand saws, coarse rasps, and rifflers give the ability to carve the softer soapstones, like most Brazilian soapstone.