Know all about Tachylite and Hawaiite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Hawaiite belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Hawaiite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Tachylite appears Glassy and Hawaiite appears Dull and Soft. The luster of Tachylite is resinous while that of Hawaiite is not available. Tachylite is available in black, dark brown colors whereas Hawaiite is available in black, brown, light to dark grey colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Hawaiite are creating artwork, sea defence.