The stone technology unlocks higher tiers of towers, walls, and the town center, and allows the construction of teleporters. Without this tech, Kingdom structures can only reach a wooden tier. After paying for this tech, the Monarch is allowed to upgrade structures to the stone tier, and build teleporters.
In Classic and New Lands[]
The stone technology is acquired through the architecture shrine.
In Two Crowns[]
The stone technology, also called Stone Age, is reached through the stone mine.
In Norse Lands[]
People have no access to the stone techniques, but they develop some woodworking at the basic logging camp.