[start: black granite tombstone]
The polished surface is so reflective that the etching on it can convey information without adding extra color. In Shanxi China, Black granite was drilled, splitted, cutted, moved to the factory, then polished, etched, packed, and then shipped to the US which normally takes 35-40days.

[end: Penn Station extension]
Polished surface speaks to the surroundings and establish connections.
Rough unpolished surface constructs a water garden and add back a civic space that has been missing in Penn Station.