Know all about Hornblendite and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Hornblendite and Obsidian belong to Igneous Rocks.Texture of Hornblendite is Banded, Foliated, Massive whereas that of Obsidian is Glassy. Hornblendite appears Foliated and Obsidian appears Shiny. The luster of Hornblendite is vitreous to dull while that of Obsidian is vitreous. Hornblendite is available in black, brown, green, grey colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Hornblendite are cemetery markers, commemorative tablets, creating artwork and that of Obsidian are creating artwork, mirror, used in aquariums.