Know all about Tachylite and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Scoria belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Scoria is Vesicular. Tachylite appears Glassy and Scoria appears Glassy and Vesicular. The luster of Tachylite is resinous while that of Scoria is subvitreous to dull. Tachylite is available in black, dark brown colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.