<；P>；PROBLEM TO BE SOLVED: To provide a stone material for underwater submergement whose production is facilitated, and which has sufficient strength, further has stability in water, and further has excellent adhesion of organisms (such as marine algae and coral). <；P>；SOLUTION: The stone material has a structure where a plurality of block objects made of a fired body of a raw material mixture essentially consisting of steel slag and a metal Al-containing material are buried into a hydrated solidified body in such a manner that a part thereof is exposed to the outer face of the hydrated solidified body. Since the plurality of block objects made of the fired bodies of the raw material mixture essentially consisting of the steel slag and the metal Al-containing material are buried into the hydrated solidified body so as to be exposed to the outer face thereof, high stability in water can be obtained by the hydrated solidified body, and further, high organism adhesion can be obtained by the plurality of buried block objects, thus the stone material in which both of organism adhesion and stability in water are excellent can be obtained. <；P>；COPYRIGHT: (C)2011,JPO&INPIT
