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en.wikipedia.org/wiki/Agate

Agate /ˈæɡət/ is a cryptocrystalline variety of silica, chiefly chalcedony, characterised by its fineness of grain and brightness of color. Although agates may be found in various kinds of rock, they are classically ... "skin" of the agate, is generally a dark greenish mineral substance, like celadonite, delessite or "green earth", ...

www.agatelady.com/agate-basics.html

There are thousands of named agates found in nearly all countries of the world. ... Rift zones are cracks in the Earth's surface out of which molten lava flowed.

news.psu.edu/story/140648/2001/09/01/research/how-do-agates-form

Sep 1, 2001 ... He glances toward the array of cut and polished agates lining the ... "The hot water pumped from deep within the earth contains a lot of dissolved silica," he explains. ... The best are found in basalt, a young volcanic rock.

www.britannica.com/science/agate

Oct 22, 2013 ... Agate is found throughout the world. ... in Earth. Third planet from the Sun and the fifth in the solar system in terms of size and mass. Its single ...

www.jewelinfo4u.com/important-agate-mines-in-the-world

Mar 9, 2016 ... Agate mines are found almost everywhere in the world. But some of the more important mines are found in USA, Russia, Europe and Canada.

www.crystalvaults.com/crystal-encyclopedia/agate

Items 1 - 12 of 266 ... Called the earth rainbow, the concentric bands of Agate form in nearly ... Laguna Agate is found in an area covering roughly four square miles ...

www.pinterest.com/pin/219550550554604123

The Ellensburg Blue Agate is the third rarest stone in the world. It has a hardness of 7.5 to 8.3 and is considered a precious stone. It's only found in the northwest ...

www.crystalflame.com/crystal-healing-stones/healing-agate

Agate as a crystal healing stone comes in many various forms, shapes and colors . ... While this stone can never be found fully transparent, its semi transparent ...

www3.northern.edu/natsource/EARTH/Fairbu1.htm

EARTH ... About 20 of these 70 gems are commonly found. ... The Fairburn agate was designated as South Dakota's state gemstone on February 11, 1966.

www.dnr.state.mn.us/education/geology/digging/agate.html

This catastrophic event, spurred by molten rock moving deep within the earth, ... The Lake Superior agate differs from other agates found around the world in its ...