Properties of Gabbro and Pegmatite play an important role in determining the type of rock. Along with Gabbro vs Pegmatite properties, get to know more about Gabbro Definition and Pegmatite Definition. For the ease of understanding, the properties of rocks are divided into physical and thermal properties. Rocks have a variety of properties like hardness, color, specific gravity, fracture, cleavage, luster etc. Know all about physical and thermal properties of Gabbro and Pegmatite.