Laser engraving is available for a wide variety of materials. Plastics, metals, stone, glass and other natural materials will accept a laser engraving flawlessly.
"A laser engraving system is used for many things. You can engrave rings. Other personal items which can be engraved including but not limited to belt buckles, cuff links, and earrings."
Laser marking machines are used to mark things. With lasers. Permanently. Stone, metal, wood, ceramic, dogs, fences, cars, wicker chairs, your grandmother, pretty much anything. such as iphone 4s,...
I have never had anything engraved, but just look for a laser engraving machine at a store and make them tell you the cost. it takes time but it is worth it if you really want a laser engraving...