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