Know all about Foidolite and Chert properties here. All properties of rocks are important as they define the type of rock and its application. Foidolite belongs to Igneous Rocks while Chert belongs to Sedimentary Rocks.Texture of Foidolite is Earthy whereas that of Chert is Banded, Rough. Foidolite appears Dull and Chert appears Glassy or Pearly. The luster of Foidolite is subvitreous to dull while that of Chert is waxy and dull. Foidolite is available in black, brown, colourless, green, grey, pink, white colors whereas Chert is available in black, brown, green, grey, red, white colors. The commercial uses of Foidolite are cemetery markers, commemorative tablets, creating artwork and that of Chert are creating artwork, gemstone, in fire-starting tools, jewelry, to ignite fire, used in flintlock firearms.