Diagram: Cupronickel ore
The Witcher 3 Remastered Crafting Diagram

Diagram: Cupronickel ore is a crafting diagram in The Witcher 3 Remastered, added in the Blood and Wine expansion. It makes Cupronickel ore. An Amateur craftsman or better forges it for 13 crowns.

It takes 3 Unrefined copper ore and Hunk of nickel. The crafting diagram itself has a base price of 3 crowns.