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Topic: Green Diamond


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In the News (Thu 24 Dec 09)

  
  The Dresden Green Diamond
In the rough, greenish diamonds tend to occur as one of three types: a stone, often a crystal shape, possessing a light tinge rather like the color of water in a swimming pool; a stone with a dark green skin; a yellowish-green stone characterized by a degree if lubricity.
Research has disclosed that green or irradiated diamonds are more common from alluvial deposits, although they are found in primary sources, usually in the upper part of the diamond-bearing volanic pipe, but green diamonds of any size are rare.
Another early reference to the Dresden Green is found in a letter dated from 1726, from Baron Gautier, the "assessor" at the Geheimes Rath's Collegium in Dresden, to the Polish ambassador in London, which speaks of the green diamond being being offered to Frederick Augustus I (1694-1753) by a London merchant for £30,000.
famousdiamonds.tripod.com /dresdengreendiamond.html   (1847 words)

  
 Diamond properties, geology, exploration, mining, use - Part VII
The coloring of many diamonds is so faint that an unpracticed observer, unless he is able to compare such a stone with an absolutely colorless diamond or to place it against a background of pure white, will fail to recognize that the stone is colored at all.
Diamonds of a fine green color are distinctly rare, only a few Examples being known; the same may be said of red diamonds and, even more emphatically, of blue diamonds.
Several Examples of beautifully transparent rose-red diamonds are known; such, for instance, as that of the fifteen-carat stone belonging to the Prince of Riccia, a few smaller specimens in the treasury at Dresden, and a thirty-two-carat stone, the most beautiful rose-red known, in the treasury of Vienna.
www.minelinks.com /alluvial/diamonds6.html   (1752 words)

  
 Fancy colored green diamond
The large green diamond was brought and cut in London in 1726.
Green colors are the hottest for the human brain to process and for the human eye to see.
The green color in natural diamonds is caused by natural radiation of the earth and probably uranium ore. Since radiation is the cause of color in both cases of natural and enhanced diamonds it poses an identification nightmare.
www.jeweler.com /green_diamonds.htm   (447 words)

  
 Green Diamond Tire
The high standards of performance of Green Diamond Tires are based on the thousands of small sharp-edged granules making firm contact with the icy road surfaces, giving them superior traction without the hammering and damaging effect of studded tires.
Green Diamond Tires are particularly suitable for use with vehicles equipped with anti-lock braking systems (ABS), with superior, scientifically-proven performance against any other tires with in the most difficult of slippery conditions, around 0°C. Green Diamond Tires are environmentally responsible.
Green Diamond Tires must be 'run-in' by driving 1,500 to 2,000 miles on clear, dry roads.
greendiamondtire.com /concept.html   (490 words)

  
 Green Diamond - Wikipedia, the free encyclopedia
The Green Diamond of the Illinois Central Railroad was a diesel streamliner (IC #121) built in 1936 by Pullman-Standard and powered by General Motors' Electro-Motive Division.
The Green Diamond's nickname was the "Tobacco Worm," because of its green color and after the "Tin Worm" nickname of the Union Pacific's first streamliner, the M-10000.
The name was chosen because a green diamond was the Illinois Central's emblem, and because the Diamond Special was the oldest named passenger train on the Chicago, Illinois to St.
en.wikipedia.org /wiki/Green_Diamond   (666 words)

  
 Green Diamond Resource Company
We are proud to say that all of Green Diamond's forestlands and lumber manufacturing facilities have been independently certified as meeting the Sustainable Forestry Initiative® Standard.
Green Diamond Resource Company recently signed an agreement that will conserve habitat and help protect seven aquatic species on our timberland: Coho salmon, steelhead, Chinook salmon, coastal cutthroat trout, rainbow trout, the southern torrent salamander and the tailed frog.
Green Diamond Resource Company, the National Marine Fisheries Service and the U.S. Fish & Wildlife Service worked cooperatively to create the Aquatic Habitat Conservation Plan/Candidate Conservation Agreement with Assurances (AHCP/CCAA) which covers all of Green Diamond?s timberland in Del Norte and Humboldt counties in California.
www.greendiamond.com   (294 words)

  
 Green Diamonds   (Site not responding. Last check: 2007-10-25)
There are two types of green diamond: those with a green skin and those with an inherent green body color.
Green diamonds with inherent green body color are naturally more desirable than greens whose color is, so to speak, only skin deep.
The two highest-priced green diamonds sold at auction (1985 and 1995) were stones with a yellowish secondary hue.
www.alphaimports.com /models/GreenDiamonds.htm   (1390 words)

  
 Green Diamond Rings
It may be more difficult because of the greater rarity of green diamonds, and the greater problem to find matching stones, but it can be done, with great results.
Green diamonds don't tend to be available in as wide a range of colours as emeralds do, so if the green of our ring is not your desired shade of green, then you might be better sticking to emeralds.
Green diamonds are of course much harder and more durable than emeralds, so would be a good choice if you want a ring which will stand up to a lifetime of living, without having to worry too much about damaging the stones.
www.green-diamonds.co.uk /rings.html   (284 words)

  
 The Dresden Green Diamond: over 100 carats in its rough form, is exceptionally unique among gems
This 40.70carat green diamond has long been considered to be the “sister” stone to the legendary Hope, which it closely matches in size, intensity of color and historical importance.
The green color is usually caused by the crystal’s coming into contact with a radioactive source at some point during its creation, which in geological terms is millions of years.
Marcus Moses, an important diamond merchant in London during the first part of the 18th century was noted as having shown the diamond to his Majesty, King George I. Another early reference is found in a letter dated from 1726, when the diamond was offered to Frederick Augustus I by a London merchant.
www.realtreasures.com /greendiamond.html   (598 words)

  
 Wildlife - Environment - Green Diamond Resource Company   (Site not responding. Last check: 2007-10-25)
This led to a telemetry study of fishers by Green Diamond biologists to follow the fishers' movements and to determine the types of trees that were critical to their habitat.
Green Diamond's studies in coastal California indicate that the species is generally not sensitive to timber harvesting activities, apparently due to the cool moist coastal climate.
Green Diamond's studies have determined that the species is particularly abundant on its ownership in California even though past unregulated timber harvesting affected much of its habitat.
www.greendiamond.com /environment/wildlife.asp   (1783 words)

  
 September 2000: Provenance of a Green Diamond
Green diamonds acquire their color from irradiation, a process that can take place naturally—deep inside the earth over millions of years—or artificially—in a laboratory in a matter of minutes.
The Dresden Green diamond is scheduled to be on display at the Smithsonian Institution’s National Museum of Natural History in Washington, D.C., from October 13 until January 25.
When the Hope diamond, which Harry Winston donated to the Smithsonian in 1958, was removed from its mounting and weighed on proper scales, the gem weighed in at 45.52 cts.—one carat larger than had been understood from the historic literature.
jck.polygon.net /archives/2000/09/jc09-158.html   (1824 words)

  
 Green Diamond Tire
Green Diamond tires are the work of an Icelandic company by the name of New Industries Ltd., who took the concept of embedding tiny metal granules evenly throughout the tread of a tire, and put it into mass production.
The Green Diamond tire is a process in which hard carbide granules are distributed evenly throughout the tires tread.
With all these reasons to switch to Green Diamonds for winter driving, one thing had yet to be determined, whether or not any of these improvements could be attributed to the tiny carbide granules embedded in the tread.
www.greendiamondtire.com /news6.html   (1198 words)

  
 Diamond Design June 2001 Newsletter
The 41-carat Dresden Green-the largest and finest natural green diamond ever found, has long been considered a "sister" to the Hope Diamond, which it closely matches in size, intensity of color, and historical importance.
Diamonds when they first come to mind are generally white or colourless.
The colour of green diamonds is caused by the diamond being exposed to a radioactive source at some point during it's growth.
www.diamonddesign.com /newsletter/2001/june/dresden_green.htm   (301 words)

  
 Fancy Diamonds
For green diamonds, one of the more rare colors, a price record was set in 2000 when a 0.90 carat vivid green brilliant cut was sold for $600,000.
The graphite inclusions cause the diamond to be a conductor.
The problem with green diamonds, and the reason that a good one is so expensive, is that the radiation usually does not effect the entire diamond.
www.emporia.edu /earthsci/amber/go340/students/flax/fancy.htm   (2201 words)

  
 ShopNBC.com - 18K Green Tourmaline & Diamond Ring
The total green tourmaline weight is 5.47ct and the total diamond weight is 0.46ct (both approximate).
The most rare and highly coveted green hues are the blue-green stones often called African tourmalines and the bottle-green gems referred to as Brazilian tourmalines.
Green tourmaline is said to encourage communication and bring success, while blue is a balancer that stimulates other tourmalines’ effectiveness.
www.shopnbc.com /product/?familyid=J193316   (1276 words)

  
 Dresden Green Diamond   (Site not responding. Last check: 2007-10-25)
In 1988 the diamond was examined by the Gemological Institute of America; not only is it an unusual type of IIa Diamond, but it is also of astonishing quality.
The diamond weighs 40.70 carats and is considered to be the worlds biggest and best natural green diamond ever found.
In 2000, Ronald Winston, the son of Harry Winston, arranged for the Dresden Green Diamond to be exhibited in the Smithsonian Institution; the exhibition opened on Friday, October 14, 2000 and remained there until January, 2001.
www.woodberrydiamonds.com /dresden_green_diamond.html   (179 words)

  
 GEMLAB Newsletter   (Site not responding. Last check: 2007-10-25)
The identification of natural green diamonds is one of the major problems in the analysis of colored diamonds.
Quite often, natural green diamonds owe their color to natural radiation damage and are thus hard or not distinguishable from laboratory irradiated stones.
The first type of green diamond is often difficult to identify, because laboratory irradiated diamonds show the same features in their spectra.
www.gemlab.net /gemlabnewsletter.htm   (1382 words)

  
 Green Diamonds
If this fact puts you off owning one, then please stop to consider that every diamond has been enhanced by facetting, and most coloured gemstones are heat treated to enhance their colour.
One of the most attractive ideas we had was to make a number of three stone diamond rings, firstly with a coloured diamond centre, with two smaller white diamonds, alternatively with a larger white centre diamond and two matching coloured side stones.
Some research has been done, and it appears that green diamonds can occur in diamonds of all four types.
www.24carat.co.uk /greendiamonds.html   (744 words)

  
 Miami Real Estate, Blue And Green Diamond Miami Beach Condos
The prestigious Blue and Green Diamond Condominium towers are among the very tallest residences in the city, and are a magnificent haven for celebrities, high-profile executives and other distinguished buyers.
Offering exceptional views of the Atlantic Ocean, Intracoastal Waterway and Miami's dramatic skyline, the Blue and Green Diamond are seemingly a world away, but are also ideally situated minutes from world-renowned South Beach and the unrivaled high-end shops of Bal Harbour.
The Blue and Green Diamond Miami Beach condos are a great buy for a luxury property.
www.kevintomlinson.com /_blue-green-diamond.asp   (205 words)

  
 Southern Environmental Law Center -- Green Diamond Development (SC)
The "Green Diamond" development envisions at least 5,000 homes, retiree living and a technology park modeled on North Carolina's Research Triangle.
The Green Diamond plan hinges on building the levees and then putting people and structures behind them.
SELC assisted in the appeal of that decision, resulting in a September 2000 map revision which showed 70 percent of the Green Diamond land as being within the Congaree floodway.
www.southernenvironment.org /cases/green_diamond/background.htm   (350 words)

  
 Dresden Green Diamond - Wikipedia, the free encyclopedia
The Dresden Green diamond is a 41 carat (8.2 g) natural green diamond that has a historical record dating to 1722, when a London news-sheet carried an article about it in its 25 October-27th edition.
The stone's unique green color is due to natural exposure to radioactive materials (see Diamond enhancement#Irradiation).
The stone is being used to compare natural versus lab-produced green diamonds — it is hoped that it can be used to devise a test to differentiate between naturally green diamonds, which are quite rare, and lab-produced ones.
en.wikipedia.org /wiki/Dresden_Green_Diamond   (215 words)

  
 CNN.com - arts & style - Natural green diamond at Smithsonian said to be world's largest - October 16, 2000
NEW YORK (CNN) -- The Dresden Green, believed to be the world's largest and finest natural green diamond, has gone on display next to its sister jewel, the Hope Diamond, at the Smithsonian National Museum of Natural History in Washington.
The 40.70-carat diamond was presented by the Harry Winston Research Foundation, which sponsored the unveiling at its Grand Salon on 5th Avenue.
The diamond's history dates to the 18th century, when it was purchased by Friedrich Augustus of Saxony.
archives.cnn.com /2000/STYLE/arts/10/16/green.diamond/index.html   (321 words)

  
 Green Diamond
The diamond is no where near as green as an emerald but is lovely to look at.
If it is truly a Natural Fancy Green diamond it is worth a little more than the colorless diamond.
I had no idea it was a diamond at first, thought it was a lighter colored emerald (how badly does my ignorance show????).
www.pricescope.com /idealbb/view.asp?topicID=3535   (303 words)

  
 Become.com - Shop results for green diamond   (Site not responding. Last check: 2007-10-25)
The bezel has 18 genuine diamonds, the face is genuine mother of pearl, and the band is genuine stingray leather.
A total of.42 CTW of diamonds and green garnets set in 14K white gold add a cool-islands-feel to your charm bracelet or to any chain necklace when hung as a...
the green diamond is approximately 4mm it is surrounded by the white diamonds.
www.become.com /shop?q=green+diamond   (648 words)

  
 Diamond Vues: Chameleon Diamond: What Is It?
A color-change diamond is such a rare and curious gem that very little has been written on the subject.
Rarer still are some “maverick” color-change diamonds that have been found in Australia that exhibit this phenomenon with their own unique pair of colors.
If you suspect that the green diamond might just be an enhanced stone, the recommended course of action would be to send it to a laboratory for testing.
www.diamondvues.com /2006/04/chameleon_diamo.html   (1011 words)

  
 Diamond Spectra   (Site not responding. Last check: 2007-10-25)
light green diamond spectrum, 7 Kbyte; from Venezuela shows the effect of natural radiation which produces green color in diamond.
green irradiated diamond spectrum, 7 Kbyte; The broad absorption band, known as the GR-1 band, is the result of a radiation-induced color center.
A picture of a polished slice of a deep blue synthetic diamond prepared from a synthetic blue diamond made by GE (45 Kbyte) showing zonation of the boron.
minerals.gps.caltech.edu /FILES/Visible/diamond/index.htm   (208 words)

  
 Fancy Green Diamonds
Green diamonds have been uncovered in Africa, South America and Asia.
From every million carats of diamond mined, only about one carat will be a fancy color diamond.
Pure Green diamonds are in fact among the most rare of all diamonds.
www.icestore.com /search/fancy_green_diamonds.asp   (339 words)

  
 Southern Environmental Law Center - Land and Community: Green Diamond Development (SC)
After years of study, the Federal Emergency Management Agency in 2001 appropriately mapped areas on the Richland County side of the Congaree River as "regulatory floodplain," properly recognizing that the current agricultural levees in Richland County should not be counted on to provide protection from a 100 year flood.
FEMA's designation, which carries with it certain development restrictions, was challenged by a politically aggressive developer, who plans to use the land for a $4 billion development.
Columbia Venture's 4,600 acre "Green Diamond" development in the floodplain near Columbia would turn the currently unpopulated farmland and forest into a New Orleans-style city behind the levees along the Congaree River.
www.southernenvironment.org /cases/green_diamond/casepage.htm   (329 words)

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