A small display piece of pure mahogany obsidian from the U.S.A. This piece of mahogany obsidian is a pure, rich brown colour and shows no signs of any black colouration giving the specimen a beautiful aesthetic. Mahogany obsidian, like regular obsidian is formed through volcanic processes and is a naturally occurring glassy rock, which even shatters and breaks as such. The red/orange colouration is due to impurities of magnesium and iron during its formation, giving it red/orange streaks through out. It is some times also referred to as oak obsidian. In some cases, the colouration can be quite uniform, with almost the entire specimen appearing to be orange or red, such as the case with this particular specimen. The sample is approximately 5.5 x 5 x 5 cm and weighs roughly 118 grams, it comes supplied in a 2" x 2" white card tray with an information label. This display piece is a must have for any rock collection as it is a beautiful example of a pure brown obsidian.