Know all about Diamictite and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Diamictite belongs to Sedimentary Rocks while Obsidian belongs to Igneous Rocks.Texture of Diamictite is Clastic whereas that of Obsidian is Glassy. Diamictite appears Banded and Obsidian appears Shiny. The luster of Diamictite is grainy, pearly and vitreous while that of Obsidian is vitreous. Diamictite is available in brown, buff colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Diamictite are commemorative tablets, creating artwork, production of lime and that of Obsidian are creating artwork, mirror, used in aquariums.