Regarding Leo's original question regarding paver stones, I don't have any experience with those.
Kindly let me know if my CNC for wood can also engrave on Marble and other material.
V-Carving on Marble, limestone, or soapstone can be done with a router that can handle hardwoods. No special bits or cooling is required. Regular carbide bits work fine. Slow the feedrate down a bit from what you would normally use with a dense hardwood. Keep your pass depth fairly shallow.
Could you kindly let me know where you got this file from.
It is from the VectorArt.com
Mega Collection #1, Image ID: 32809L You can purchase the individual file from them for $2.