Blue Roof Designs and Wikipedia provide information about Dremel bits. One can also find information about Dremel bits on the official Dremel website.

No you can not, the stone is way hard to cut with a dremel tool.

Power dremel is used for cutting, carving, sanding, polishing and many other applications.

Dremel tools include: rotary tools; oscillating tools; the "Dremel Trio" for cutting, sanding, and routing; the "Saw-Max;" and the "Moto-Saw," which can act as a scroll saw or a coping-saw.

Bosch.