Recognize the session layer of the OSI model ; List the seven layers of the OSI model ; Discuss the responsibilities, functions and protocols of the session layer ; Specify the six session layer protocols
Currently, the most popular color for this gem is the blue zircon. Most blue zircon, which is considered an alternate birthstone for December, is normally a pastel to medium blue in color, but some exceptional gems have a bright blue color. Beyond blue, Zircon is also available in green, deep red, yellow, brown, and orange.
Blue Zircon. Natural zircon is noteworthy for its high refractive index and excellent fire. In fact zircon has a higher refractive index than sapphire and ruby. Zircon also has impressive fire, with a dispersion rating nearly as high as diamond. Zircon is found in a range of colors, including blue, red, pink, orange, honey, green and white.