Know all about Tephrite and Ganister properties here. All properties of rocks are important as they define the type of rock and its application. Tephrite belongs to Igneous Rocks while Ganister belongs to Sedimentary Rocks.Texture of Tephrite is Aphanitic to Porphyritic whereas that of Ganister is Clastic, Granular, Rough. Tephrite appears Vesicular and Ganister appears Rough. The luster of Tephrite is subvitreous to dull while that of Ganister is dull. Tephrite is available in black, brown, colourless, green, grey, white colors whereas Ganister is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Tephrite are production of lime, soil conditioner and that of Ganister are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.