Stone
Kadappa (black limestone)
The grey-black limestone of Andhra's Kadapa district, split into large economical slabs; South India's workhorse shelf, floor, and lining stone.
How it behaves
Dense, cool, and water-tolerant: a naturally cold floor in a hot climate and a reliable liner for tanks and wet areas. Ages to a soft patina rather than wearing out.
Where it belongs
Andhra Pradesh · Across South Indian building
In a modern project
Cool interior flooring that replaces vitrified tile; kitchen and utility surfaces; water-tank linings.