Answer:
Hello, Etching. Etching is a type of engraving that is used on crystal, stone, and glass.
Rotary Engraving. Rotary Engraving is used on certain metals including gold, sterling silver, copper, and aluminium.
Laser Engraving. Engraving is a printmaking technique that involves making incisions into a metal plate which retain the ink and form the printed image. William Hogarth. The Enraged Musician 1741. Tate. The design is manually incised into an engraving plate using a burin, an engraving tool like a very fine chisel with a lozenge-shaped. Hope That Helps!
From Itsbrazts.