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Agate (/ ˈ æ ɡ ɪ t / AG-it) is a variety of chalcedony, [1] which comes in a wide variety of colors. Agates are primarily formed within volcanic and metamorphic rocks.The ornamental use of agate was common in ancient Greece, in assorted jewelry and in the seal stones of Greek warriors, [2] while bead necklaces with pierced and polished agate date back to the 3rd millennium BCE in the Indus ...
The Fairburn Agate is a type of gemstone found in the agate beds of Southwestern South Dakota and Northwestern Nebraska. It is also the state gemstone of South Dakota. [ 1 ] Fairburns are characterized from other types of agate by their colors and the shape of the bands.
Tree agate. Moss agate contains green filament-like inclusions, giving it the superficial appearance of moss or blue cheese. There is also tree agate which is similar to moss agate except it is solid white with green filaments whereas moss agate usually has a transparent background, so the "moss" appears in 3D.
Lake Superior Agate - Duluth, Minnesota. The Lake Superior agate is a type of agate stained by iron and found on the shores of Lake Superior.Its wide distribution and iron-rich bands of color reflect the gemstone's geologic history in Minnesota, Wisconsin, Nebraska, Iowa, Kansas, and Michigan.
Some are carnelians or black agate with thin white etching patterns resembling the back of a turtle, which is an ancient pattern that dates back to the era of the Harappan Indus culture. Ancient Roman agate beads as well as etched Bactrian, Middle Eastern, Chinese, Afghan, Yemeni, [6] and Indian agate and carnelian beads made their way into ...
Image credits: shawneffel Art imitates life. And if you look closely enough, art also is life.The photos from this list prove that there can be beauty in the most mundane and random moments if we ...
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Turritella agate; This page was last edited on 30 May 2016, at 11:25 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4. ...