Know all about Shale and Blueschist properties here. All properties of rocks are important as they define the type of rock and its application. Shale belongs to Sedimentary Rocks while Blueschist belongs to Metamorphic Rocks.Texture of Shale is Clastic, Splintery whereas that of Blueschist is Foliated. Shale appears Muddy and Blueschist appears Dull and Banded. The luster of Shale and Blueschist is dull. Shale is available in black, brown, buff, green, grey, red, yellow colors whereas Blueschist is available in blue, bluish - grey, purple, shades of blue colors. The commercial uses of Shale are creating artwork, pottery and that of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones.