Know all about Tephrite and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Tephrite belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks.Texture of Tephrite is Aphanitic to Porphyritic whereas that of Pseudotachylite is Quench. Tephrite appears Vesicular and Pseudotachylite appears Dull and Soft. The luster of Tephrite is subvitreous to dull while that of Pseudotachylite is vitreous. Tephrite is available in black, brown, colourless, green, grey, white colors whereas Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Tephrite are production of lime, soil conditioner and that of Pseudotachylite are creating artwork, gemstone.