Mahogany Obsidian is natural glass obsidian that has inclusions of Magnetite or Haematite creating the mahogany-colored patches in it. A hugely protective stone, this one is perfect for people who feel vulnerable to psychic or energy attacks. … Mahogany Obsidian is often used to aid in the decision-making process. This mahogany obsidian cabochon was cut and polished by hand by David at Braun Cabochons. The copper was hand-formed and hammered to embrace the obsidian. The pendant has some added glimmer from a golden rutilated quartz accent bead.