Know all about Obsidian and Monzogranite properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian and Monzogranite belong to Igneous Rocks.Texture of Obsidian is Glassy whereas that of Monzogranite is Porphyritic. Obsidian appears Shiny and Monzogranite appears Veined or Pebbled. The luster of Obsidian is vitreous while that of Monzogranite is dull to grainy with sporadic parts pearly and vitreous. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Monzogranite is available in black, grey, orange, pink, white colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Monzogranite are cemetery markers, commemorative tablets, creating artwork, curling, tombstones.