Gemstone Treatments
Though not common knowledge to the public, most gemstones are treated in some way to enhance their color and clarity. An untreated gemstone is a rarity. These treatments are common and widely accepted in the industry and normally do not de-value the stone.
Most retail jewelers do not divulge this information to their buying public or they themselves are not aware. If they are a reputable and ethical establishment then they will be honest if queried on the subject. Don't expect this information to be offered without inquiring first.
Heat treatment is the most common method used to color enhance gems. Tanzanite, which has become a very popular gemstone in jewelry and to collect is heat treated to obtain that gorgeous cornflower blue color with lavender tones and flashes of red. The rough must be heated to 600 degrees; otherwise, Tanzanite as we know it wouldn't exist.
Colored diamonds (which do occur naturally) are irradiated to obtain those most sought after colors of red and blue. Naturally colored diamonds are very, very costly and rare. The "Hope" diamond is an example of a natural blue diamond. Natural colored diamonds can come in a rainbow of colors such as blue, brown, yellow, orange, red, purple, pink, and green, but the cost is just to prohibitive for most people to obtain. Irradiated diamonds create those beautiful colors at a cost which is more affordable. Natural colored diamonds are radiated in the earth's crust which takes millions of years. Man has learned how to speed up the process and produce those same colors in the laboratory. Champagne and yellow diamonds are more abundant in nature and are not usually irradiated to obtain their color.
Topaz is another gemstone which requires treatment to obtain the colors it's known for such as the "London Blue" color which takes about 18 months to process. A recent popular color is called "Mystic Fire" which is a rainbow of colors in the same gem. Another popular color is pink. Pink topaz is much more affordable than pink sapphire. Pink is one of the most popular colors in gemstone jewelry. The "Mystic Fire" color was created by a process called bulk diffusion. Topaz naturally is white (also called silver) or the golden-peach color known as "precious" or "imperial" topaz which is the most rare and expensive of topaz. Due to the demand for the other colors such as Swiss Blue, London Blue, Pink, Mango, Neptune Blue, Mystic Fire, etc. white topaz (which is needed to create colored topaz) has become more and more scarce and risen in cost.
There are a number of gemstones that don't require nor will they take any kind of enhancement treatment. Their colors occur naturally right out of the earth. They only needed to be cut and polished to show off their beauty. Those gems that come to mind are garnets, chrome diopside, red spinel, and peridot.
Untreated gemstones are more rare and therefore may fetch a higher price than treated gemstones. As a collector or investor I would seek the non-enhanced variety if available and affordable.
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Learn and read more about gemstones by purchasing Debra's E-book titled "A New Collector's Gemstone Guide" at http://www.profitfromhomebiz.com
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 Google News Updated : Sun, 07 Sep 2008 02:07:34 GMT Jenkins: Murray willing to play the spoiler - San Francisco Chronicle
San Francisco Chronicle - (09-06) 18:24 PDT New York -- Andy Murray must feel very alone just now. He's a long way from his native Scotland. He's carrying the hopes of British tennis, but the London press would really prefer him to be English. Federer beats Djokovic to reach US Open final Split stadiums for US Open semis ruffles crowd Publ.Date : Sun, 07 Sep 2008 01:44:27 GMT Report: Samsung working to acquire SanDisk - San Jose Mercury News San Jose Mercury News - AP Samsung was reported Friday to be considering buying Milpitas-based SanDisk, whose revenue has diminished and stock has plummeted in recent months due to the saturated flash-memory market. SanDisk Shares Soar on Samsung Interest SanDisk Shares Surge as Samsung Considers Acquisition (Update3) Publ.Date : Sat, 06 Sep 2008 16:19:13 GMT Movies opening this week - San Jose Mercury News
San Jose Mercury News - By Mercury News "Burn After Reading" (R): The Coen brothers follow "No Country for Old Men" with a dark comedy about two inept gym employees who get hold of a CD-ROM containing a CIA operative's memoirs. Toronto Review: The Coen Brother's Burn After Reading Pitt Rocks to Madonna Publ.Date : Sat, 06 Sep 2008 20:56:32 GMT Dodgers overtake first place - MLB.com
MLB.com - By Michael Schwartz / MLB.com LOS ANGELES -- Manny Ramirez's five RBIs propelled the Dodgers into first place in the National League West for only the second day all season Saturday after a 7-2 win over the D-backs at Dodger Stadium. Ramirez, Billingsley lead streaking Dodgers into first place Dodgers move into first place Publ.Date : Sat, 06 Sep 2008 23:14:26 GMT European space probe completes asteroid fly by - Reuters
Reuters - BERLIN (Reuters) - The European Space Agency obtained on Saturday the first images of an asteroid 360 million km (224 million miles) from earth, part of a space mission which scientists hope will help them understand the origins of the planets. Rosetta spacecraft takes asteroid photos Spacecraft flies by remote asteroid, camera stops Publ.Date : Sat, 06 Sep 2008 14:13:31 GMT Palin and McCain’s Shotgun Marriage - New York Times
New York Times - By FRANK RICH SARAH PALIN makes John McCain look even older than he is. And he seemed more than willing to play that part on Thursday night. An Apostle of Alaska 'Sarah Palin Is Wasilla': Town Stands Behind VP Pick Publ.Date : Sun, 07 Sep 2008 01:18:29 GMT Gates outacts Seinfeld in Back To The Future - CNET News
CNET News - Which is why Crispin Porter Bogusky, the agency responsible for the otherworldly new Microsoft TV spot featuring the clowning Bill Gates and Jerry Seinfeld, is already happy. Microsoft's Renewed Vista Strategy You Thought Vista Was Bad? Publ.Date : Sun, 07 Sep 2008 00:01:52 GMT Web Site Traffic |
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