Adamantite Beam

A metal girder block in the red end of the hardmode palette. It reads as structural steel rather than masonry, so it suits factories, airships and anything mechanical, and it looks out of place in a cottage. Later versions also made it shrug off explosives, which is handy for the outer shell of an arena where rockets and bombs get thrown around.

• Its item id sits right at the front of the 1.2 range, which points to it being the very first thing built for that update.