Know all about Obsidian and Talc carbonate properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian belongs to Igneous Rocks while Talc carbonate belongs to Metamorphic Rocks.Texture of Obsidian is Glassy whereas that of Talc carbonate is Very Soft. Obsidian appears Shiny and Talc carbonate appears Soft. The luster of Obsidian is vitreous while that of Talc carbonate is pearly. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Talc carbonate is available in colourless, grey, white colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Talc carbonate are manufacturing of baby powder.