Know all about Pseudotachylite and Blueschist properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite and Blueschist belong to Metamorphic Rocks.Texture of Pseudotachylite is Quench whereas that of Blueschist is Foliated. Pseudotachylite appears Dull and Soft and Blueschist appears Dull and Banded. The luster of Pseudotachylite is vitreous while that of Blueschist is dull. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Blueschist is available in blue, bluish - grey, purple, shades of blue colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones.