mirror finish

noun

1. a smooth highly polished surface produced on metal by mechanical or electrolytic polishing or lapping

Example Sentences

The mold is hand polished to a mirror finish, giving the bumper its lustre.

From Reuters

There is the historical knowledge and expertise of 40 years of pouring bronze, creating wax molds, and woodworking, combined with newer technologies like the polymethyl methacrylate 3-D printers and CNC machine, an automated machining tool which, on this visit, was in the middle of a 1,000-hour job polishing a massive steel disc to an impossibly seamless mirror finish.

From New York Times

Like, the whole top-sheet is a single piece of aluminum, polished to a mirror finish.

From The Verge

The silver settled on the surface, coating the outside with a thin layer, giving it a mirror finish.

From Salon

The Styler is already on the market, with a new black mirror finish available later this year.

From Seattle Times