Know all about Diabase and Tachylite properties here. All properties of rocks are important as they define the type of rock and its application. Diabase and Tachylite belong to Igneous Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Tachylite is Vitreous. Diabase appears Vesicular and Tachylite appears Glassy. The luster of Diabase is not available while that of Tachylite is resinous. Diabase is available in dark grey to black colors whereas Tachylite is available in black, dark brown colors. The commercial uses of Diabase are an oil and gas reservoir, cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Tachylite are cemetery markers, creating artwork.