After quarrying and dressing, stone still retains natural moisture within. This moisture is called quarry sap. The removal of this moisture by cyclic drying and airing is called seasoning of stone. This moisture if not removed may render the stone to be soft and weak. Upon frosting it may cause the stone to weaken and split. Seasoning is crucial to retain the toughness, hardness and strength of stone.
Seasoning is both drying and wetting cycles on one hand, and airing of stone, on the other hand. There is an increase in strength due to the re-deposition of percolated minerals, surface carbonation, transmission and deposition of minerals on the surface of a stone, by both the evaporating moisture, and addition of water. Dehydration, during seasoning, is more or less an irreversible process, Seasoning applies mainly to soft stone; hard stones seem to be less affected by it.