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