The most important thing to learn about the OSI model is what it really represents. Pretend you're an operating system on a network. Your network card, operating at layers 1 and 2, will notify you when there's data available. The driver handles the shedding of the layer 2 frame, which reveals a bright, shiny layer 3 packet inside (hopefully).
Used with permission. Agate is a variety of chalcedony, a cryptocrystalline form of quartz. Translucency, patterns of color, or moss-like inclusions may distinguish this stone from other forms of chalcedony. Agates can show a wide variety of vivid, multiple colors.
Healing Properties of Agate. Agates are earth stones. Overall, agates are gentle, nourishing, and strengthening, with a lower intensity than many other gemstones. Individual types of agate have their own personal healing properties. Agate as a Gemstone About the Stone. Agate is an umbrella name for a number of varieties of banded chalcedony. Agate occurs in many colors that range from translucent to opaque. Agates are found all over the world. Some agates are geodes, which means they are hollow in the middle, often with crystals inside. Agates grow in many different types of rock, and through many different processes.