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