Know all about Blueschist and Gossan properties here. All properties of rocks are important as they define the type of rock and its application. Blueschist and Gossan belong to Metamorphic Rocks.Texture of Blueschist is Foliated whereas that of Gossan is Rough, Sandy. Blueschist appears Dull and Banded and Gossan appears Dull and Banded. The luster of Blueschist is dull while that of Gossan is metallic. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Gossan is available in brown, brown- black, gold, green, rust colors. The commercial uses of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones and that of Gossan are cemetery markers, commemorative tablets, gemstone.