Laser Engraving or etching is a process that is the result of combining leading edge laser technology with cutting edge photo imaging and artistic creativity. At Etched in Stone, the engraving is done with a 45 watt, sealed CO2 laser producing near photographic quality images in a variety of surfaces including marble, granite, tile and wood. Unfortunately, photos of very black images with no highlights or contrast do not reproduce well on black marble or granite.
Essentially, in stone the laser super heats the surface of the material causing precise microscopic explosions. This action removes the polished surface in varying degrees. Depending on the contrast desired, the laser's computer program determines the number of explosions required.