Properties of Peridotite and Icelandite play an important role in determining the type of rock. Along with Peridotite vs Icelandite properties, get to know more about Peridotite Definition and Icelandite 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 Peridotite and Icelandite.