Celtic Knot Patterned Copper, Textured Copper, Copper Sheet, Copper Metal, Rolling Mill Pattern, Rolling Mill Design This listing is for one celtic knot themed copper sheet. This is a raw copper sheet embossed with a celtic knot design that is ready for your creations. It measures approximately 6.5 inches x 2.5 inches and is made to order. These can be made in 18- 24 gauge copper ( please note that metal gauges are inverse to the number size, in other words 18 gauge is much thicker and weighs more than 24 gauge copper). Copper is a reactive soft metal so it will oxidize with time but can be easily shined to a bright copper finish. Price varies per gauge. These can be used in enamel work, soldering, riveting, and other copper crafts and jewelry fabrication. These are made of 0.999 pure copper so they are lead and nickel free.