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