Know all about Obsidian and Eclogite properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian belongs to Igneous Rocks while Eclogite belongs to Metamorphic Rocks.Texture of Obsidian is Glassy whereas that of Eclogite is Earthy. Obsidian appears Shiny and Eclogite appears Dull, Banded and Foilated. The luster of Obsidian is vitreous while that of Eclogite is subvitreous to dull. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Eclogite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Eclogite are creating artwork, gemstone.