Know all about Tephrite and Nephelinite properties here. All properties of rocks are important as they define the type of rock and its application. Tephrite and Nephelinite belong to Igneous Rocks.Texture of Tephrite is Aphanitic to Porphyritic whereas that of Nephelinite is Aphanitic. Tephrite appears Vesicular and Nephelinite appears Skeletal. The luster of Tephrite is subvitreous to dull while that of Nephelinite is vitreous to metallic. Tephrite and Nephelinite are available in black, brown, colourless, green, grey, white colors. The commercial uses of Tephrite are production of lime, soil conditioner and that of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo).