Agate is one of the oldest gemstone, which has mention in history. Agate comes in variety of forms, which are named according to their appearance. It occurs in nodular masses in rocks such as volcanic lavas. According to another theory the word Agate comes from the Greek name of a stone found in the Achates River in Sicily, now known as the Drillo River, which still remains a major source of this stone.
This is the stone everyone should have for protection. It attracts strength and is a protection from bad dreams. It also protects from stress and energy drains. The agate, group of stones is variegated chalcedony. The banding is what distinguishes agate from other types of chalcedony. Agates have been used in jewelry since Biblical Babylonian times.

Agate is considered to be an ideal material for jewelry with the strength or hardness of 7 on Mohs scale. Although being a relatively hard stone it cracks readily. Thus we can say that hardness and durability are two different things. Generally the physical properties of agate are similar to those of quartz.

Agate as a mineral has been valued since time in memorial. The price of agate varies depending on its type, color, size, and quality.

Historical Importance
Agate is the oldest stone in recorded history. Agates have been used in jewelry since Biblical Babylonian times. They were used to ward off storms. They were prized gems in antiquity. The agates with banded colors were placed at the head of a sleeper to give rich and varied dreams.

The major place where agate is mined is Idar-Oberstein in Germany; here agate has been collected since 1548. Other locations to find agate are Uruguay, Brazil, United States, Mexico, Madagascar, Italy, Egypt, India, China, and Scotland.

Agate is said to have many medicinal effects on the body, like it is used for stomach upsets. It quiets the pulse and heart throbs and insures good health and a long and prosperous life. The agate can't change emotions, but helps to change our level of acceptance of the emotion. Such as when you are very sad the agate will let you know that this will pass and help you get on to another and better day. This is why the Agate is considered very powerful as it gives us the strength to carry on. Carry an agate when you have to make an important decision.