Agate is a colored stone that consists mainly of quartz, and has its own physical properties as it is found in different regions of the world such as the United States; It is available in several states such as Oregon, Washington, Idaho, and Montana, which is the main source for extracting gemstones.[1] Agate stone, in its chemical composition, matches precious stones such as jasper, petrified wood, and flint, and is often extracted with opals, and it is found in different colors such as white, and is used in the field of gemstones and the manufacture of grinding mechanisms.[2]

How to form agate

Agate is one of the stones that formed under the surface of the earth over time, and Peter Heaney, associate professor of earth sciences, says that it is one of the very complex stones that need a long time to analyze. Heaney believes that the way in which silica (silicon dioxide) dissolves in water is the reason for its formation. Agate; Agate begins to form inside a cavity or void in the rocks; Like volcanic basalt rocks that contain a lot of water and carbon dioxide, which disappear from these stones, forming voids and holes like those found in Swiss cheese, and then the minerals in the water begin to crystallize,[3] After the stones have hardened for a long time, the water carrying silica, which by its alkaline nature works to penetrate between these spaces, penetrates them, then it condenses until it becomes a gel-like consistency, and the soluble components present in it contribute to the formation of different layers. Which can consist of several colors such as red, black, and brown, and there are types that mimic the growth of vegetables such as mossy agate.[1]

Agate and history

Agate is used in the jewelry and gem industries, but it was used in the past for other purposes such as its use in ancient beliefs and traditions to protect against bites of snakes and scorpions, and to help calm the mind, ward off infection, stop lightning and thunder, and other superstitious beliefs.[2]

the reviewer

  1. ^ AB “Agate”,, Retrieved 1-2-2019. Edited.
  2. ^ a b “Agate”,, Retrieved 1-2-2019. Edited.
  3. ↑ Nancy Marie Brown (1-9-2001), “How Do Agates Form?”,, Retrieved 1-2-2019. Edited.

What is agate

writing – on the date : – Last updated: 2022-06-20 16:54:01