Stone Name: Mahogany ObsidianOrigin: India ASTROLOGICAL SIGN: Libra, ScorpioCHAKRA: Root & Sacral ChakraPLANETS: Earth MOHS HARDNESS: 5 to 5.5 HardnessNUMERICAL VIBRATION: 4 Mahogany Obsidian Mahogany Obsidian is an excellent stone for those who are looking to improve their personal relationships....