Obsidian is a type of natural glass that is formed from volcanic lava when it cools very quickly. It is usually shiny and black, and has been used for thousands of years to make tools and weapons. Full definition
Other advisory board members include Feargus Urquhart, CEO of Obsidian Entertainment, and Aaron Isaken, Co-founder of Indie Fund. (gamingenthusiast.net)
2005 Aston Martin Vanquish S finished in Onyx Black with Obsidian Black Interior. (dupontregistry.com)
In the world of espionage, nothing is as it seems in Obsidian Entertainment's blockbuster role - playing game (RPG) thr... (gamefaqs.gamespot.com)