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.
The rarest diamond colour is the naturally occurring red colour. All naturally coloured diamonds have a further grade designation on this scale: FaintVery LightLightFancy Lig â¦ htFancyFancy DarkFancy IntenseFancy DeepFancy Vivid The Fancy Vivid colour designation is the most expensive grade. Read more, below.