Premium Copper Patina Sheets These various colors are developed using techniques and processes mastered through years of experimentation. These colored sheets can be used for a variety of applications and projects including countertops, backsplashes, cabinets, furniture, and much more. Note that because each piece is truly unique, you should expect some slight variations in the patina-in other words, no two pieces are exactly alike. All of our copper is 99.9% pure copper (Copper Alloy 110). These copper patina sheets are .005 inches thick (5 mil or 36 gauge) copper alloy 110 (99.9% pure copper). It can be easily cut with scissors. See a detailed description of 5 mil on our thickness guide.
