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