No-Plating is when the metal of the jewelry piece has no additional outer coating, and the metal is often polished to make it shiny and reflective.
Brushed is a process of using quartz sand to polish a chosen metal (gold, stainless steel, etc.) under high pressure. This finish is an effective method for removing surface imperfections. In addition, it gives a pattern of fine lines parallel to the brushing direction that creates a distinctive look for jewelry.