diamond plate
Noun
Meaning
(design) A type of lightweight metal stock with a regular pattern of raised diamonds or lines (anti-slip surfacing).
(flooring) A plate of such material.
Source: en.wiktionary.orgExamples
The ledges, flat bars, wallrides, granite ledge and diamond plate of the park might be familiar to Gotham’s street surfers: Vans consulted with local skate shops and board-pushers to design the park.
The Metallica James Hetfield “Diamond Plate” Miniature Guitar Replica is stunning with its raised metal diamond plate detail.