Know all about Rhyolite and Foidolite properties here. All properties of rocks are important as they define the type of rock and its application. Rhyolite and Foidolite belong to Igneous Rocks.Texture of Rhyolite is Aphanitic, Glassy, Porphyritic whereas that of Foidolite is Earthy. Rhyolite appears Banded and Foidolite appears Dull. The luster of Rhyolite is earthy while that of Foidolite is subvitreous to dull. Rhyolite is available in grey, white, light black colors whereas Foidolite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Rhyolite are gemstone, laboratory bench tops, jewelry and that of Foidolite are cemetery markers, commemorative tablets, creating artwork.