The invention relates to a method for manufacturing a calcified tissue substitute, the method comprising: reacting ground nacre, monocalcium phosphate, and water to produce brushite; grinding the brushite; reacting ground nacre with the ground brushite in disodium hydrogenphosphate solution. The invention also relates to a calcified tissue substitute manufactured by the method, use of the calcified tissue substitute for repairing a calcified tissue, and a delivery device for delivering the calcified tissue.