Know all about Blueschist and Oil 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 Oil shale belongs to Sedimentary Rocks.Texture of Blueschist is Foliated whereas that of Oil shale is Splintery. Blueschist appears Dull and Banded and Oil shale appears Muddy. The luster of Blueschist and Oil shale is dull. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Oil 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 Oil shale are an oil and gas reservoir.