3M Paper (set of all 6 grits: 400, 600, 1200, 4000, 6000, 8000). 3M WetOrDry™ Polishing Paper is a jeweler's favorite for finishing fine jewelry made of gold, platinum, silver, titanium, steel, or practically any alloy. The non-woven backing allows easy polishing of interior shapes and contours. Precision, micron grading provides a unique, consistent finish.