Know all about Tachylite and Larvikite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Larvikite belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Larvikite is Phaneritic. Tachylite appears Glassy and Larvikite appears Shiny. The luster of Tachylite is resinous while that of Larvikite is subvitreous to dull. Tachylite is available in black, dark brown colors whereas Larvikite is available in black, brown, light to dark grey, white colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Larvikite are cemetery markers, commemorative tablets, creating artwork.