Know all about Rhyodacite and Pegmatite properties here. All properties of rocks are important as they define the type of rock and its application. Rhyodacite and Pegmatite belong to Igneous Rocks.Texture of Rhyodacite is Earthy whereas that of Pegmatite is Pegmatitic. Rhyodacite appears Skeletal and Pegmatite appears Layered, Banded, Veined and Shiny. The luster of Rhyodacite is greasy to dull while that of Pegmatite is grainy, pearly and vitreous. Rhyodacite is available in black to grey, dark greenish - grey colors whereas Pegmatite is available in black, brown, cream, green, grey, pink, red, rust, silver, white, yellow colors. The commercial uses of Rhyodacite are cemetery markers, creating artwork and that of Pegmatite are creating artwork, jewelry, source of corundum, tourmalines, beryls and topaz.