The Oxidized Copper Lantern is the final oxidation stage of the Copper Lantern, featuring a fully aged teal surface with deep green tones that reflect complete weathering. It functions the same as the earlier stages, emitting a light level of 15 and producing a vivid green flame that adds a mystical atmosphere to any build. The Oxidized Copper Lantern can be placed on top of blocks or hung beneath them and connects seamlessly to Copper Chains for elegant lighting designs.

The Oxidized Copper Lantern naturally forms when a Weathered Copper Lantern reaches full oxidation over time, though it can also be obtained directly in creative mode. Players can preserve its patinated appearance by applying Honeycomb to create a Waxed Oxidized Copper Lantern, or use an axe to revert it to a previous oxidation stage. The block is waterloggable, non-flammable, and drops itself when mined or when its supporting block is destroyed. With a hardness and blast resistance of 3.5, the Oxidized Copper Lantern provides a stable, fully oxidized copper look ideal for atmospheric and antique-style lighting.