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 golden color known as honey zircon tends to be less expensive, as does the red zircon from Africa. Red zircon typically ranges in price from $75 to $125 per carat, while the honey zircon sells for $50 to $100 per carat.Exceptional colors or very large sizes will be more.hite zircon, once sold as a diamond substitute in the days before synthetics like moissanite, is still quite inexpensive at about $35 to $50 per carat. It is one of the most brilliant of all colorless gemstones.