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