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