Know all about Pseudotachylite and Hawaiite properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite belongs to Metamorphic Rocks while Hawaiite belongs to Igneous Rocks.Texture of Pseudotachylite is Quench whereas that of Hawaiite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Pseudotachylite appears Dull and Soft and Hawaiite appears Dull and Soft. The luster of Pseudotachylite is vitreous while that of Hawaiite is not available. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Hawaiite is available in black, brown, light to dark grey colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Hawaiite are creating artwork, sea defence.