Mechanical properties of coarse aggregate depend on the source of the stone, its chemical composition, and geological formation. Accordingly any strength is a property of the stone and all strengths can be related to each other in some way or form. This research studies the relation of different strengths with each other and in particular the aggregate crushing, impact and abrasion resistance. Experimental data will be used to find mathematical models that relate each strength with the other strengths. Results include mathematical model that may convert one strength to the other and vice versa with a high degree of accuracy.