Most agates occurs as nodules in volcanic rock or ancient lava, where they represent cavities originally produced by the disengagement of volitiles in the molten mass which were then filled wholly or partially, by siliceous matter deposited in regular layers upon the walls. When cut transversely, the agate shows a succession of parallel lines, giving it a banded appearance. Such stones are called banded agate, riband agate and striped agate. 
Many agates are hollow, since deposition has not gone far enough to fill the cavity, and in such cases the last deposit commonly consists of quartz, often amethyst, having the apices of the crystals directed towards the free space so as to form a crystal-lined cavity or geode.
Many agates are hollow, since deposition has not gone far enough to fill the cavity, and in such cases the last deposit commonly consists of quartz, often amethyst, having the apices of the crystals directed towards the free space so as to form a crystal-lined cavity or geode. 
AGATE BELIEFS
In many traditions agate is believed to cure the sting of scorpions
and the bites of snakes. Sooth the mind. Prevent contagions. Still thunder and lightening and
and the bites of snakes. Sooth the mind. Prevent contagions. Still thunder and lightening and
promote eloquence
.
USES IN INDUSTRY
Agate is used to make jewelry, knives, inkstands, marbles and seals.Because of its hardness, and its ability to resist acid, agate is used to make mortars and pestles to crush and mix chemicals. Also because of the high polish of agate it has been used for centuries for leather burnishing tools.
Until next time.
Peace be with you and have a wonderful day.
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