To view all our multimeter ranges go to http://bit.ly/1EdnDeo. In this video, Josh shows us how to use a multimeter to check for faults in an electrical switch.1  Howto & Style. 2  Standard YouTube License.o view all our multimeter ranges go to http://bit.ly/1EdnDeo. In this video, Josh shows us how to use a multimeter to check for faults in an electrical switch. 1  Howto & Style. 2  Standard YouTube License.
Black is the most common color of obsidian. However, it can also be brown, tan, or green. Rarely, obsidian can be blue, red, orange, or yellow. The colors are thought to be caused mainly by trace elements or inclusions.
Varieties/Types: 1  Apache Tears - Small rounded pebbles of black Obsidian found in American Southwest. 2  Macusanite. 3  Mahogany Obsidian - A variety of Obsidian with black and red banding. 4  Rainbow Obsidian - Obsidian with multicolored iridescence. 5  Sheen Obsidian - A variety of obsidian exhibiting a golden sheen effect.