Weathered Chiseled Copper is the third of four oxidation stages of Chiseled Copper, sitting between Exposed Chiseled Copper and the final Oxidized Chiseled Copper. Unwaxed Chiseled Copper reaches the weathered stage naturally over time, turning green with scattered brown spots instead of the darker teal of full oxidation. Chiseled Copper generates naturally inside trial chambers, giving builders ready-made weathered patches without waiting for the block to age on its own. Mining Weathered Chiseled Copper requires a stone pickaxe or better; breaking it with anything weaker drops nothing, and a full stack holds 64 blocks.

Weathered Chiseled Copper crafts from two matching Weathered Cut Copper Slabs on the crafting grid, and a stonecutter turns one Weathered Block of Copper into four Weathered Chiseled Copper or one Weathered Cut Copper into one Weathered Chiseled Copper. Both an axe and a lightning bolt can remove oxidation from Weathered Chiseled Copper, restoring an earlier, less-oxidized look. Applying a honeycomb locks Weathered Chiseled Copper at its current look, the easiest way to keep the green-and-brown patina on doors, roofs, and statues instead of drifting toward full oxidation. The weathered stage gives builders a mid-tone aged copper texture that pairs well with stone and deepslate exteriors.