Engraving is the process of cutting into the surface of an annealed glass object either by holding it against a rotating copper wheel fed with an abrasive or by scratching it, usually with a diamond.
Carving is the removal of crystal from the surface of an object by means of hand-held tools.
Cutting is the technique whereby crystal is removed from the surface of an object by grinding it with a rotating wheel made of stone, wood, or metal, and an abrasive suspended in liquid as the cutter holds the object against the upper, or top, side of the rotating wheel.
Sand-blasting or Deep etching is an engraving technique which allows logo and text to be reproduced on crystal awards with great precision. A design is transferred to a stencil and attached to crystal with special adhesives. Then abrasive sand is blasted to the stenciled award area at extreme pressure. The design is permanently engraved into crystal with beautiful deep grooves.