Obsidian is volcanic glass that forms naturally. It comes from the rapid cooling of felsic lava. Obsidian is naturally black in color and has a glassy texture and a vitreous luster. There are several shades of Obsidian including rainbow, snowflake, gold, and mahogany. Obsidian is hard and brittle and was commonly used for tools. The meaning of Obsidian is safety and grounding. This beautiful piece of Obsidian is in the shape of an Angels wing and measures  3cm x 1.5cm approx. It is suspended from  a 17 Inch Approx Silver Plated Chain. Obsidian is a birthstone for Sagittarians. Obsidian is usually black but can also be green, brown, or beige. When obsidian contains inclusions or other elements, it can be orange, yellow, blue and red.