Know all about Blueschist and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Blueschist belongs to Metamorphic Rocks while Marl belongs to Sedimentary Rocks.Texture of Blueschist is Foliated whereas that of Marl is Earthy. Blueschist appears Dull and Banded and Marl appears Rough and Dull. The luster of Blueschist and Marl is dull. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones and that of Marl are creating artwork, soil conditioner.