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