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