A piece of marble

is a crafting resource that can be processed at either stone cutter from marble blocks. They are primarily used to produce higher tier graveyard decorations.

Marble sources can be found at Witch Hill or at the marble quarry in the north-west area of the map near the cabin in the woods. It's also possible to have them mined automatically by using a zombie marble quarry or to buy them from Cory, the engineer, for quite a pretty penny.

There is no separate stockpile for marble, and blocks are instead stored together with stone blocks on the stone stockpile.