DiamondPlateTexture.png|Diamond Plated Steel as it appears in game. Capturediamondplatedsteel.PNG|Diamond Plated Steel as it appears in real life. diamond.JPG Diamond Plated Steel is one of the many surface types on ROBLOX. It transforms any brick into Diamond Plated Steel . This metallic material is usually used for vehicle floors and because of this, many truck beds and metal walls are composed of it.