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Topic: Amethyst (color)

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	Amethyst - Wikipedia, the free encyclopedia
		In the 20th century, the color of amethyst was attributed to the presence of manganese.
		Amethyst is composed of an irregular superposition of alternate lamellae of right-handed and left-handed quartz.
		Amethyst was used as a gemstone by the ancient Egyptians and was largely employed in antiquity for intaglios.
	en.wikipedia.org /wiki/Amethyst (1030 words)

	Amethyst (color) - Wikipedia, the free encyclopedia
		The color amethyst is a moderate, transparent violet.
		Though the color of natural amethyst varies from purple to yellow, the amethyst color referred to here is the moderate purple color most commonly associated with amethyst stones.
		Some believe that the color is due to the presence of manganese, while others have suggested that the amethyst color could be from ferric thiocyanate or sulfur found in amethyst stones.
	en.wikipedia.org /wiki/Amethyst_(color) (129 words)

	[No title]
		To clarity grade colored gemstones, a combination of the loupe (or microscope), and the unaided eye is commonly used.
		Amethysts frequently have color banding within the gemstone, which looks like purple and clear stripes, and is treated as an inclusion.
		Colored gemstones are not cut to such rigid dimensions and angles as are diamonds.
	www.borsheims.com /Borsheims/Dept.aspx?Dept=AboutAmethyst (706 words)

	Color smoky quartz and amethyst (Site not responding. Last check: 2007-11-05)
		The nature of the pigments of smoky quartz and amethyst was investigated from the standpoints of the occurrence and genesis of those minerals, the effect of heat and of radiations upon the colors, the transmission of light, and analysis for the various impurities.
		Nabl concluded that the spectrum of amethyst is identical with that of ferric sulfocyanate, and advanced the hypothesis that the violet color is due to that compound.
		This color, being complementary to violet, is responsible for the hue of amethyst.
	www.minsocam.org /msa/collectors_corner/arc/quartza.htm (10483 words)

	Why are amethyst smoky quartz colored? (color centers)
		The trapped electron, responsible for the color, is known as a "color center." The color center produces the color exactly as the impurity does in the ruby crystal.
		An iron impurity is responsible for the violet color in amethyst by creatiing a color center.
		The colors of both amethyst and smoky quartz are stable to light but are lost on being heated to 300 to 500"C; if not overheated, the color center and the color can be restored by another irradiation, and so on.
	webexhibits.org /causesofcolor/12.html (1916 words)

	Encyclopedia of Gemstones - Amethyst. Amethyst's color, characteristics of Amethyst, varieties of Amethyst, mystical ...
		Amethyst is the most valuable transparent, coarse-grained variety of the silica mineral quartz that is valued as a semiprecious gem for its violet color.
		Amethyst is associated with a number of superstitions, being regarded as a love charm, and as a protection against thieves.
		In Tibet, amethyst is considered to be sacred to Buddha and rosaries are often fashioned from it.
	www.all-that-gifts.com /se/amethyst.html (764 words)

	Amethyst
		The color of amethyst is usually attributed to the presence of manganese, but as it is capable of being much altered and even discharged by heat it has been referred by some authorities to an organic source.
		On exposure to heat, amethyst generally becomes yellow, and much of the cairngorm or yellow quartz of jewellery is said to be merely " burnt amethyst." Veins of amethystine quartz are apt to lose their color on the exposed outcrop.
		The amethyst was used as a gem-stone by the ancient Egyptians, and was largely employed in antiquity for intaglios.
	www.jewelry-paideia.com /reference/ref-gemstone-amethyst-1.php (500 words)

	AMETHYST - WWW.BESTCRYSTALS.COM
		It is the presence of manganese in quartz that produces the purple color, and iron content varies the coloration.
		Amethyst has long been associated with relieving hangovers, or curing drunkenness, probably as a result of its wine-like color and the Bacchus tale.
		Amethyst is the birthstone for February, and is associated with the signs of Pisces, Virgo, Aquarius, and Capricorn.
	www.bestcrystals.com /amethyst.html (312 words)

	Amethyst Rings and Amethyst Jewelry. (Site not responding. Last check: 2007-11-05)
		This color of sapphire is sweet of sugar -- the cotton candy shade of pink sapphire.
		Amethyst jewelry set with natural gemstones that range in color from pale lavender to bluish-purple to royal to a very deep, reddish purple to a milky color to green.
		Amethyst rings are available in classic solitaries, fancy dinner rings, and modern contemporary ladie's styles, handsome men's styles such as nugget, solitaire, textured, freeform, and inset.
	www.earthstreasure.com /Amethyst-Jewelry.html (924 words)

	Amethyst (Site not responding. Last check: 2007-11-05)
		Amethyst is a member of the quartz family, one of the most abundant minerals in the Earth's crust.
		Ranging in color from pale lilac (know as 'Rose of France') to a deep purple with red flashes, often referred to as 'Siberian', this gemstone commonly occurs in very large sizes.
		Amethyst can sometimes be treated to lighten the color, although this is not done very frequently.
	www.jewelry-plus.com /Amethyst.htm (281 words)

	Amethyst
		Amethyst is the recognized birthstone for February and the accepted anniversary gemstone for the sixth year of marriage.
		Amethyst is a variety of quartz, and comes in pale lilac to rich, deep purple shades.
		Amethyst was said to have a sobering effect on the wearer-not only those who indulged but on those over-excited by love's passion as well.
	www.azgem.com /amethyst.html (505 words)

	Gem Hut - Amethyst Gemstones
		Amethyst is sometimes heat treated to form citrine.
		Amethyst crystals can form together with citrine crystals to form bi-colored quartz called ametrine.
		Amethyst is the birthstone of the month of February.
	www.gemhut.com /amethyst.htm (140 words)

	Amethyst The February Birthstone - JewelInfo4u (Site not responding. Last check: 2007-11-05)
		For example Amethyst has the power to control the effects of a planet which will cause problems for you, then to wear an amethyst of a particular size as a ring or a bracelet can protect you from the ill effects of the planetary movement.
		The gemstone amethyst has a beautiful purple color and because of its grandeur was the most commonly used jewelry embellishment by the kings and queens of the yesteryears.
		Amethyst is such a beauty that anybody can wear it, even if it's not your birthstone you can still have an amethyst jewelry.
	www.jewelinfo4u.com /Amethyst_The_February_Birthstone.aspx (1034 words)

	Amethyst (Site not responding. Last check: 2007-11-05)
		Amethyst is a member of the Quartz family.
		This deep colored Amethyst is perfect for cutting 4 mm to 6x8 mm earring and ring size gems.
		A mixture of all grades of Amethyst, from cabbing to faceting.
	www.neweragems.com /html/amethyst.html (189 words)

	Amethyst
		Amethyst, transparent purple quartz, is the most important quartz variety used in jewelry.
		Because amethyst was thought to encourage celibacy and symbolize piety, amethyst was very important in the ornamentation of Catholic and other churches in the Middle Ages.
		Amethyst is mined in Brazil, Uruguay, Bolivia and Argentina, as well as in Zambia, Namibia and other African countries.
	www.gemstone.org /gem-by-gem/english/amethyst.html (412 words)

	Amethyst Color (Site not responding. Last check: 2007-11-05)
		This natural color amethyst crystal is semi-transparent in the lower half, and it becomes transparent towards This natural color amethyst crystal was base-sawn and then polished on.
		Amethyst color develops when iron-containing quartz is exposed to ionizing radiation the case for all amethyst, the amethyst color center in ametrine is.
		Colors caused by Color centers: amethyst, smoky quartz, desert "amethyst" glass, some fluorescence and lasers responsible for the violet color in amethyst by creatiing a color center.
	www.e-jewelry-1.com /diamonds/amethyst-color.html (552 words)

	Amethyst (Site not responding. Last check: 2007-11-05)
		Amethyst is the purple variety of quartz and is one of the most popular and widely used gems.
		Amethyst comes in long six sided crystals or can form as druzies that are crystalline crusts that only show the pointed termination's.
		Often the crystals have phantoms opposite of Vera Cruz amethyst having a purple interior with a clear or white quartz exterior.
	www.nfobase.com /html/amethyst.html (1133 words)

	Amethyst Resource - Autumn Gallery Handmade Amethyst Jewelry
		Amethyst specimens from South America are usually available in larger sizes as compared to African Amethyst, however the African stone is known for having better rich color consistency. Dark purple
		Amethyst ranges in color from pale lilac to deep purple.
		The deep colors are the most valuable, particularly a rich purple with light rose tones.
	www.autumngallery.net /amethyst.html (513 words)

	Amethyst (Site not responding. Last check: 2007-11-05)
		The color of amethyst is usually attributed to the presence of manganese.
		However, since it is capable of being much altered and even discharged by heat, the color has been referred by some authorities to an organic source.
		On exposure to heat, amethyst generally becomes yellow, and much of the citrine, cairngorm or yellow quartz of jewellry is said to be merely "burnt amethyst." Veins of amethystine quartz are apt to lose their color on the exposed outcrop.
	www.yotor.com /wiki/en/am/Amethyst.htm (781 words)

	Alan Guisewite's Mineral Collection Images: Quartz Page
		Rose quartz's (crystalline) color is due to aluminum and phosphorus impurities - massive rose quartz's color is due to microscopic and, as yet, unidentified dumortierite-like fibers
		Pale amethyst crystals in rhyolite comprise this miniature from the Topaz Mountain Amphitheater, West Wall, Juab County, Utah.
		The amethysts from the Muhshquash mines near Thunder Bay, Ontario, Canada are chunky, cloudy, and have red and green included areas.
	www.cs.cmu.edu /~adg/adg-pqimages.html (2572 words)

	February-Amethyst
		The lightest color of amethyst, the light lilac color, is known as the "Rose of France."
		In Arabian mythology, the amethyst was supposed to protect the wearer from bad dreams and gout.
		When heated (to 400 or 500 degrees Celsius), an amethyst's color changes to a golden-yellow or red.
	www.geocities.com /freeeforever/amethyst.htm (463 words)

	Amethyst Colored Gemstone Information sheet ~PGR Gems
		It was, in particular, considered to be the stone of bishops and bishops still often wear amethyst rings.
		Besides it's royal color, Amethyst is also the King of the Quartz gem family.
		Amethyst has been successfully synthesized in the lab, so buyers need to be sure their source is qualified to separate natural from lab grown material.
	www.pgrgem.com /color/datasheets/pgrameth.html (479 words)

	NDGA - Article on Depression Glass Patterns (Site not responding. Last check: 2007-11-05)
		The colors made during the Depression Glass era are listed in reference books as Depression Glass even though it was not produced by the totally mechanized methods that generally define Depression Glass.
		It was made for ten years in seven colors and remains one of the most popular patterns for today's collectors even though there are many reproduced pieces that cause concern for collectors.
		Only three colors (pink, royal ruby and crystal) were produced in 1939, but many new colors were introduced in later years.
	www.ndga.net /articles/dgarticle.htm (4124 words)

	Amethyst Color Mosaic Krystallure and Clear CZ Ring $26.90 (Site not responding. Last check: 2007-11-05)
		Amethyst Color Mosaic Krystallure and Clear CZ Ring $26.90
		Experience the vibrant color of the amethyst color mosaic krystallure ring.
		Other details of the amethyst color mosaic krystallure and CZ include: Measures approx.
	jewelrybee.com /technibond1.html (126 words)

	Amethyst Color (Site not responding. Last check: 2007-11-05)
		nature of the pigments of smoky quartz and amethyst was investigated from the standpoints of the occurrence and...
		It is concluded that amethyst owes its color to a ferric compound...
		This amethyst cabochon gem was handcrafted from natural color amethyst rough that was mined in...
	www.kan-kan.info /28/amethyst-color.html (603 words)

	ALEXANDRITE a color changing variety of chrysoberyl
		Coloring agents are dependent on the wavelength of light and the chemical bonds in the crystal to determine the color that they will cause.
		An element like copper, in normal light, can cause a green color in malachite and a blue color in azurite, it all depends on the character of the chemical bonding.
		In a single specimen of alexandrite, the chromium is in such a balanced situation that the color of the specimen depends on the character of light that hits the crystal.
	mineral.galleries.com /minerals/gemstone/alexandr/alexandr.htm (236 words)

	infos - amethyst color
		The pale colors are sometimes called andquot;Rose de Franceandquot; and can...
		As a mineral specimen, amethyst is popular for its color and nice crystal shapes that produce a handsome, purple, sparkling cluster.
		The gemstone amethyst has a beautiful purple color and because of its grandeur was the most commonly used jewelry embellishment by the...
	www.musicreleases.de /amethyst_color.html (321 words)

	Genuine Amethyst color Czech Crystal Rhodium Silver Ring (Site not responding. Last check: 2007-11-05)
		This beautiful loose Czech Amethyst color Crystal cluster ring is not only quite unusual but quite sophisticated.
		The ring is made from rhodium plated base metal and has a chain bound cluster of about 25 4mm faceted Crystal that flow with movement like the ebbs of the tide.
		This is a handmade item and the number, size, and color of crystal may vary slighly.
	dazzleyourself.com /site/947583/product/etamethyst (242 words)

	Color Amethyst (Site not responding. Last check: 2007-11-05)
		Versa Color Amethyst Modernscrapbooking, scrapbooks, scrapbooking, collage, rubber stamps, stamping, inks, charms,embellishments, acrylic handles, stamp sheets, vintage paper, photographs,memory albums, altered books, mini books, cardstock, Notify me of updates to Versa Color Amethyst.
		Silver, gold and amethyst color earrings!, ends Dec-12 3:36 pm PST.
		Made of 100% cotton with a soft and shaggy feel, this cream-color Amethyst Butterfly bath rug delivers all the.
	www.e-jewelry-1.com /rings/color-amethyst.html (532 words)

	Touch-up Paint Amethyst (color code 363) Subaru All Models by Subaru J3610FS050
		While this is a factory color code there may be slight variations in paint color.
		Subaru Amethyst touch up paint, when applied to the damaged area as soon as found, is a layer of factory colored protection to keep your Subaru looking new and corrosion free.
		Every tube of Subaru Amethyst touch up paint features a built-in agitator to help mix the paint in the bottle before application as well as a built-in applicator brush located under the cap.
	www.brandsport.com /sub-j3610fs050.html (412 words)

	Natural Amethyst Gem Stones
		All of these stones are hand cut by the finest craftsmen.
		All of these stones have the finest clarity and color.
		Note: Color May Vary due to Computer Monitor Set Up.
	www.justgemstones.com /natural_amethyst.html (1255 words)

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