Know all about Oil shale and Blueschist properties here. All properties of rocks are important as they define the type of rock and its application. Oil shale belongs to Sedimentary Rocks while Blueschist belongs to Metamorphic Rocks.Texture of Oil shale is Splintery whereas that of Blueschist is Foliated. Oil shale appears Muddy and Blueschist appears Dull and Banded. The luster of Oil shale and Blueschist is dull. Oil 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 Oil shale are an oil and gas reservoir and that of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones.