Know all about Dacite and Theralite properties here. All properties of rocks are important as they define the type of rock and its application. Dacite and Theralite belong to Igneous Rocks.Texture of Dacite is Aphanitic to Porphyritic whereas that of Theralite is Phaneritic. Dacite appears Vesicular and Theralite appears Veined and Shiny. The luster of Dacite is subvitreous to dull while that of Theralite is waxy and dull. Dacite is available in bluish - grey, brown, grey, light to dark grey colors whereas Theralite is available in dark grey to black colors. The commercial uses of Dacite are commemorative tablets, creating artwork and that of Theralite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.