Green Obsidian is one of Obsidian Rocks that contain impurities as Pure obsidian usually appears to be dark, although the color may vary depending on the presence of impurities. Iron and other elements of transition can give a dark brown to black color to the obsidian.

Obsidian is formed as lava from volcanic eruptions cools within the earth. The speed at which it cools prevents crystallization and the rock forms as solid volcanic glass.

Source: Geologypage.com

Obsidian helps those who are sensitive against depression. It is a the stone of the soft hearted and gentle people of the world. Use obsidian to help block negativity of any kind. As a black gemstone, it symbolizes self control and resilience. 

Green Obsidian helps with healing, brings about peace within.  Encourage to have a purpose in life

Lord Ganesha, the renowned elephant-headed god, is one of the most revered and worshipped deities in the Hindu pantheon. Ganesha’s energy has the power to remove obstacles, bestow wisdom and promote prosperity and success in all ventures. 

Om Gan Ganpataye Namo Namaha