OSI Model - The Lower Layers The bottom four layers of the OSI model are often referred to as the lower layers: â¢ Layer-4 â Transport layer â¢ Layer-3 â Network layer â¢ Layer-2 â Data-Link layer â¢ Layer-1 â Physical layer Protocols that operate at these layers control the end-to-end transport of data
Ross-Simons' Agate Jewelry. Agate is a variety of chalcedony that comes in variety colors making it ideal for all kinds of jewelry designing. Blue agate is as expected, light blue. Moss agate is dark green, often with clear patches.Tree agate is green and white.gate: Stripes Earned by Nature. With its combination of earthiness and elegance, agate is one of the most unusual gemstones. There are many varieties of agate, including blue lace agate, moss agate, tree agate and petrified wood.
Agate is a very popular stone in various feng shui cures and carvings. You can find a wide variety of agates on the market-from red agate to moss agate to blue, purple and pink agates.Basically, it would be pretty accurate to say that agate comes in most colours of the rainbow.Characteristic to agate is a beautiful banding that can reveal fascinating shapes, forms and layers.ichard Price/Getty. Agate is a very popular stone in various feng shui cures and carvings. You can find a wide variety of agates on the market-from red agate to moss agate to blue, purple and pink agates. Basically, it would be pretty accurate to say that agate comes in most colours of the rainbow.