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chalcedony
Chalcedon
Chalcedon , ancient Greek city of Asia Minor, on the Bosporus. It was founded by Megara on the shore opposite Byzantium in 685 BC Taken by the Persians and recovered by the Greeks, it was later a possession of the kings of Bithynia, from whom it passed (AD 74) to Rome. The Council of Chalcedon was held there in AD 451. The site is in the suburbs of Istanbul.
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Black chalcedony. (Jewel of the Month).(Brief Article)
Magazine article from: JCK's High-Volume Jeweler; 5/1/2002; ; 700+ words
; ...stone is chalcedony, a cryptocrystalline...Examples of chalcedonies of just one...rare. Most chalcedony is multicolored...multicolored chalcedonies include bloodstone...irregular, the chalcedony is called agate. Because chalcedonies are porous...
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Black chalcedony. (Jewel of the Month).(black onyx)(Brief Article)
Magazine article from: Jewelers Circular Keystone; 5/1/2002; ; 700+ words
; ...stone is chalcedony, a cryptocrystalline...Examples of chalcedonies of just one...rare. Most chalcedony is multicolored...multicolored chalcedonies include bloodstone...irregular, the chalcedony is called agate. Because chalcedonies are porous...
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Blue chalcedony.(jewel of the month)
Magazine article from: Jewelers Circular Keystone; 3/1/2005; ; 700+ words
; ...color types are sold as chalcedony, whereas the rest...as jasper or agate. Chalcedonies are nearly always cabbed...Namibia's blue chalcedony, often called "African...valuable of the "blue" chalcedonies, is a translucent purple-to-lavender chalcedony, that is, a blue...
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Introducing sea blue chalcedony. (Gem Notes).(Brief Article)
Magazine article from: Jewelers Circular Keystone; 1/1/2002; ; 652 words
; Chalcedony is a natural microcrystalline quartz...and fire agate. Common translucent chalcedony occurs in a wide range of natural colors...discoveries made in blues and lavenders. With chalcedony's recent popularity--thanks to...
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Where's a good piece of chalcedony when you need one?(Gem Notes)(Brief Article)
Magazine article from: Jewelers Circular Keystone; 9/1/2004; ; 700+ words
; ...sardonyx, agate (banded chalcedony) bloodstone, sard...Matching inexpensive chalcedonies with beaders can result...artists have discovered chalcedony, too. They can get...and carvers can get chalcedony from almost anywhere in the world. Second, chalcedonies, including agates...
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Chalcedony: It's Back and Blue.(Brief Article)
Magazine article from: Jewelers Circular Keystone; 6/1/2001; ; 700+ words
; ...in our February issue that lavender chalcedony is fast becoming a hot commodity among...artists and jewelry designers ("Lavender Chalcedony: A New Find," JCK, February 2001...interest in an old favorite--blue chalcedony. "It's been around a lot longer...
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Lavender Chalcedony: A New Find.(from Gem Reflections of California)(Brief Article)
Magazine article from: Jewelers Circular Keystone; 2/1/2001; ; 682 words
; ...This time, it's lavender chalcedony. While chalcedonies, particularly agates, are...nice new find. The purplish chalcedony is found in an area that also...beauty. The new lavender chalcedony, a translucent material colored...
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Maxam Magnata makes new chalcedonies for Tucson show.(www.wholesalegems.com)(Brief Article)
Magazine article from: Jewelers Circular Keystone; 2/1/2004; 693 words
; ...is launching two new colors of dyed chalcedony: Sunfire (golden yellow) and Verdana...green). Magnata released Sea Blue chalcedony last year in Tucson. Magnata is following...vogue. Because of its porous nature, chalcedony is often dyed. The most common dyed...
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US CHALCEDONY ALLIED WITH HUIJIE
News Wire article from: AsiaInfo Services; 8/23/1999; 237 words
; AsiaInfo Services 08-23-1999 US Chalcedony Allied with Huijie CHINA, August 23...It was announced on August 12 that US Chalcedony and Huijie Group had established a strategic...intelligence network products and solutions. Chalcedony is a world-famous network designer...
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The milky way: designers are rediscovering the allure of chalcedony, a rare stone that's lighting up the season. (Accessories Flash).
Magazine article from: W; 6/1/2002; ; 481 words
; Chalcedony doesn't exactly roll off the tongue...imagination of jewelry designers this season. Chalcedony had its heyday back in the Thirties...Duchess of Windsor in 1937. Comprised of chalcedony beads, leaves and an exquisite flower...
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chalcedony
Book article from: The Columbia Encyclopedia, Sixth Edition
chalcedony [from Chalcedon ], form of quartz the crystals...be seen except with the aid of a microscope. Chalcedony has a waxy luster and is translucent to transparent. The name chalcedony is applied more specifically to white, gray...
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Chalcedony
Encyclopedia entry from: Encyclopedia of Occultism and Parapsychology
Chalcedony A silica mineral related to quartz. Superstition credits chalcedony with magical and medicinal properties. It is a good specific against fantasy and illusions of evil spirits. It supposedly quickens the power of the body and renders...
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Geode
Encyclopedia entry from: The Gale Encyclopedia of Science
...are characterized by an outer shell of chalcedony, a dense microcrystalline form of quartz...formed are commonly different. Because chalcedony is often harder and more weather resistant...upon their shape, the characteristic chalcedony shell, and the lower density arising...
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geode
Book article from: The Columbia Encyclopedia, Sixth Edition
...mineral matter; they have a thin layer of chalcedony ( "wavy" quartz) covering an inner...will eventually be transformed into the chalcedony layer. As the water surrounding the...gel dehydrates, crystallizes to form chalcedony, and cracks, mineral-bearing water...
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quartz
Book article from: The Columbia Encyclopedia, Sixth Edition
...crystal structure of which can be seen only under the microscope, if at all, are chalcedony , flint , hornstone, and chert. Colored varieties of chalcedony known by special names are carnelian , sard, chrysoprase, agate , onyx , sardonyx...
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