Limestone is formed by the compression of skeletons, shells, mollusks and other living sea creatures over a period of millions of years. Most limestone cut for buildings or ornamental pieces are of a softer grade and about 15 millions years old. The limestone used for flooring tile is the hardest grade of limestone and may be 180 millions years old.
Limestone quarries cut big blocks of the stone which in return are cut to slabs, then cut to sizes end then pieces which are carved by artisans.