Know all about Tephrite and Rhyodacite properties here. All properties of rocks are important as they define the type of rock and its application. Tephrite and Rhyodacite belong to Igneous Rocks.Texture of Tephrite is Aphanitic to Porphyritic whereas that of Rhyodacite is Earthy. Tephrite appears Vesicular and Rhyodacite appears Skeletal. The luster of Tephrite is subvitreous to dull while that of Rhyodacite is greasy to dull. Tephrite is available in black, brown, colourless, green, grey, white colors whereas Rhyodacite is available in black to grey, dark greenish - grey colors. The commercial uses of Tephrite are production of lime, soil conditioner and that of Rhyodacite are cemetery markers, creating artwork.