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