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September 3rd, 2010Manufactured vs. Mined Diamonds
September 2nd, 2010Diamonds are expensive not just because of their beauty and resilience, but also in large part because of the fact that they are very rare and difficult to extract. So in recent years, the diamond mining industry, led by the corporate giant DeBeers, has been shaken up by the emergence of the viable commercial production of synthetic, gem-quality diamonds.
For over a century DeBeers has controlled the world’s supply of diamonds. But now that diamonds can be created cheaply, in potentially high quantity, and with a quality that is equal or greater than the quality of natural diamonds, the diamond industry finds itself in an uncertain flux.
DeBeers has spent a lot of money providing major jewelers with sophisticated machines that detect the minute differences between manufactured and minded diamonds. Some issues arise from the fact that there aren’t all that many major differences. The differences that are there tend to indicate to the higher purity of lab-made diamonds.
One of the main differences between the synthetic and natural diamonds is that, in nature, colored diamonds occur rarely and are therefore highly priced. In the lab, however, colorless diamonds are harder to produce, and colored diamonds are easier and cheaper to make. As a result you can buy a synthetic colored diamond of equal quality to a natural diamond for a fraction of the natural diamond’s price.
Also, man-made diamonds have distinct growth patterns and usually fewer inclusions than mined diamonds, which helps jewelers distinguish somewhat cleanly between the two, albeit using high-tech inspectional equipment.
Gemesis and Apollo, the two main producers of synthetic diamonds today, however, say that their intent is not to pass off their diamonds as natural. They openly disclose their diamond’s origins to jewelers. Their hope is to offer synthetic diamonds to the public as alternatives to natural gems that are of the same quality and can be consumed in tandem with mined diamonds.
Proponents of the diamond mining industry insist that it is the history of natural diamonds that makes them valuable. Jef Van Royen, a senior scientist at the Diamond High Council was quoted in 2003 as saying that, “If people really love each other, then they give each other the real stone. It is not a symbol of eternal love if it is something that was created last week.”
If you are looking in San Diego at diamonds and want help finding the difference of a mined diamond check http://www.davidandsonsjewelers.com/san-diego-jewelers to find out more.
Ryan Frank is a 23 year writer and blogger living in San Diego, CA
Introduction of Diamond Formation
September 1st, 2010A diamond is a transparent gem made of carbon, one of the earth’s most common elements. The formation of diamonds began very early in the Earth’s history, when the centre of the planet was subjected to incredible extremes of temperatures and pressure.
Diamonds are decidedly one of the most highly valued and fascinating precious gems and considered by all people across the globe as nature’s unique gift to mankind. It is interesting to know diamonds evolved – millions of years ago in pockets of carbon dioxide that existed deep beneath the Earth’s crust. Tremendous heat and pressure combined to cause the carbon atoms to crystallize forming diamonds and the intermittent volcanic eruptions brought the diamonds up to the surface.
Diamonds originate from two types of deposits – Primary deposits that consist of diamond-bearing pipes of a volcanic rock called Kimberlite. From deep inside the earth, these deposits were carried to the surface as molten rock called as magma. The secondary deposits, also referred to as alluvial, were formed as a result of erosion of material from primary deposits. They are said to contain diamonds that have traveled away from their original source.
Diamonds, regardless which type of deposits it emanates from, require special mining techniques. Primary deposits, in which diamonds are contained in Kimberlite pipes, require open pit or underground mining operations. Secondary deposits diamonds require alluvial mining, which uncovers diamonds in riverbed, coastal and marine/undersea locations. Diamonds are created when carbon is put under immense pressure and temperature deep within the earth—at distances of 250 miles or even greater.
It is common knowledge that regardless of the way diamonds are mined, to construct maintain and operate a mine enormous investment and technical skills are necessary. When it comes to open pit and underground mines, crushing is done to uncover the diamonds. The excavation of sand is necessary to find diamonds in coastal mining. Undersea mining entails drilling into the seabed to recover diamond-bearing gravels. Riverbed mining involves some basic equipment such as sieves and pans.
The formation of natural diamond takes place under extraordinary conditions like exposure of carbon-bearing materials to enormous high pressure combined with temperature between approximately 1650–2370 °F (900–1300 °C). It is interesting to know that these mosy unlikely conditions are met only in two places on Earth – in the lithospheric mantle and at the site of possible meteorite strike.
The conditions for diamond formation in the lithospheric mantle occur at considerable depth keeping with the temperature and pressure as detailed earlier. Very small-sized diamonds, known as microdiamonds or nanodiamonds, have been found in meteorite impact craters where shock zones of high pressure and temperature suitable for diamond formation occur. Studies of carbon isotope ratios shows the carbon found in diamonds comes from both inorganic and organic sources.
Even though world diamond production has tripled since 1980, diamonds continue to be a scarce resource. Geologists are using extensive methods in diamond exploration, including satellite surveys, reconnaissance sampling and drilling in the ground. Today, 75-80% of the world’s natural diamonds are used for industrial purposes and only 20 to 25% for gemstones. It is the chemical and physical properties of this mineral that give it the superior cutting ability for industrial use.
Some of today’s diamond-producing countries include Botswana, Canada, Namibia, Russia, South Africa, Australia, and Tanzania.
Brayan Peter is an expert author for Engagement Rings. He written many articles like Loose Diamonds, Wedding Rings, Pearl Jewelry, Diamond Studs. For more information visit our site http://www.jamesallen.com/. Contact me at engagementrings.info@gmail.com
How to Recognize a Non Conflict Diamond
September 1st, 2010Many people are absolutely devastated when they learn about conflict diamonds. They think about their engagement ring, their glittery jewelry, and all of the diamonds that they have admired over the years. The brilliance of these pieces is diminished greatly by their bloody history. Diamonds that come from countries in a state of insurrection or rebellion are often obtained by violent and inhumane means.
Tyrant groups take over mines and the villages nearby, forcing villagers into slavery and intimidating their families with murder, rape, and amputation. They sell these diamonds to industrial country and use the money to buy weapons and fund illicit activities. However, there are many places around the world and some parts of Africa that mine clean diamonds through peaceful means. A large part of the money helps support the economy and some reconstruction. It is possible to get a jewelry piece made from a non conflict diamond from most major diamond retailers, if you know what to ask for.
However, there is no way to know for sure if a diamond is non conflict. Once the rock has been cut and polished, it is impossible to tell where it was mined. Thus, for a diamond to be “non conflict” certified, its mining, cutting, polishing, and shipping must be extensively recorded, regulated, and double checked. The jeweler that you go to should have a license and official paperwork in order to prove that the diamond did not come from a conflict area.
There are four questions you should ask the salesperson whenever you buy diamond jewelry. The salesperson should be able to answer these questions, as blood diamonds are a huge issue in the diamond industry, so everyone involved is fairly familiar with them in the same way that they are familiar with diamond quality issues, such as IGI appraisals or GIA appraisals. If the salesperson cannot or does not answer any of these questions, then you should politely take your business elsewhere.
The first question is, “How can I know for sure that these are non conflict diamonds?” A guarantee from the store is not enough, if a diamond is non conflict then it will have gone through the Kimberly Process, and the salesperson should have some nice papers for you, with embellishments and special textures to prevent forgeries as best as possible. There also might be a certificate or something along those lines that indicate that they only sell non conflict diamonds. Several Canadian diamond retailers or retailers that sell Canadian diamonds will have this.
The second question is, “Do you know where the diamonds you sell come from?” Many countries in South Africa, such as Sierra Leone, Liberia, and The Democratic Republic of the Congo are known conflict areas, so diamonds from them are most likely to be blood diamonds. If you are extremely knowledgeable about blood diamonds, then you know that some areas of Africa actually have clean diamonds that are good for the local economy. However, if you aren’t heavily researched, it might be best to stay clear away from the region.
It also helps to have your diamond certifications straightened out; for instance, GIA diamond rings are not necessarily non conflict diamonds. The third question you should ask is the retailer’s policy in buying and selling blood diamonds. If you are dedicated to this cause, then you might want to only support jewelers who refuse any association with blood diamonds. The fourth request is to see a guarantee from their diamond suppliers that the rocks they sell are clean.
Allison Ryan is a licensed gemologist from San Diego, CA. She specializes in GIA diamond rings that have passed all IGI appraisals for non conflict diamond jewelry. For design-your-own diamond jewelry, check out http://www.diamondwave.com/.
Famous Diamond Mines
August 31st, 2010The discovery of diamonds in 1867 in the Cape Colony of South Africa had a profound effect on the world’s supply of diamonds. For the ten years following the discovery a once extremely rare material became more accessible to Western society. Scientists learned that diamonds came from volcanoes. South Africa still maintains its position as the major diamond producer but there are other famous mines located in other areas.
In North America the oldest and most famous diamond mine is the Crater of Diamonds. It is located in Murfreesboro, Arkansas. In 1906, John Wesley Huddleston bought the land for farming purposes and noticed two small stones in the bottom of a bucket of feed. He sent the stones to a Little Rock Jeweler who then sent them to Tiffany’s in New York. They were certified as gem quality. John then sold the property to some people in Little Rock for $36,000.
De Beers Consolidated Mines are located in several African countries. The company was founded in 1888 and today it is comprised of rough diamond exploration, mining and trading companies. The De Beers companies make up about 40% of the world’s diamond production.
The Kimberley Diamond Mines are known worldwide and are located in the town of Kimberley, South Africa. In 1866 Erasmus Jacobs discovered a small stone by the Orange River. It turned out that is stone was a 21.25 carat diamond. In 1871 a 83.5 carat diamond was found on the slopes of Colesberg Kopje and this led to the first diamond rush in the area.
The Williamson Diamond Mine, which is also known as the Mwadui Mine is located in Tanzania. It was the first significant diamond mine outside of South Africa. Dr John Williamson, a Canadian geologist established the mine in 1940. It is an operating pit mine and mainly produces diamond carats.
The Premier Diamond Mine located in Transvaal, South Africa is one of the most famous mines and is known throughout the world. This mine was found to be a huge volcanic chimney of diamondiferous earth. It covers about 80 acres and is shaped like a pear. It is situated on a level plateau at an elevation of about two hundred feet.
The Ekati Diamond Mine is Canada’s first diamond mine. It is located near Lac de Gras and is about 200km south of the Arctic Circle. It is a joint venture between BHP Billiton Diamonds and the two geologists who discovered the kimberlite pipes in that area. It is only accessible by air except for 10 weeks each year when it can be reached by icy roads.
The Kollur Diamond Mine is located in Guntur District Golkonda, India. It is one of the most productive mines in India and was the first major diamond center. It was operated between the sixteenth and mid nineteenth centuries. The Indian mines were eventually depleted and the diamond center shifted to Brazil where new diamond pipes were discovered.
These are just a few of the more famous diamond mines known today. Diamonds have a very interesting history and also a very bright future.
Article from DanforthDiamond.com, a leading authority on loose diamonds, diamond engagement rings and fine jewelry. Danforth Diamond provides wisdom and advice to help you choose the right ring at the right price. Visit DanforthDiamond.com or call 877.404.RING
Exposing The Real Price Of Diamond Engagement Rings
August 31st, 2010The presentation and acceptance of a diamond engagement ring is one of the major highlights in a couple journey through life. However, take a step back and look at the route that your diamond has taken to reach you. Are you completely sure that it comes from a legitimate source?
The issue of conflict diamonds came roaring into the public domain in 2006 when the Hollywood blockbuster movie “Blood Diamond” was released, starring Leonardo di Caprio. Set against the backdrop of civil war in the 1990s, it highlighted the plight of many diamond producing countries and the many people who worked the mines.
Conflict diamonds is the term given to diamonds which are mined in areas of conflict. The human cost of conflict diamonds is vast, with legitimate stories from certain African nations being extremely distressing, involving the lives of men, women and children alike. Workers are often subjected to harsh working conditions, and earn pittance. The rough diamonds are then siezed by the malitia, and the funds generated from the mining of the diamonds are often used to fund wars against legitimate governments or similar activities. These rough diamonds find their way into the diamond supply chain, are cut, certified and sold to retailers who then sell to the public. At its height in the 1990s, it was believed that conflict diamonds accounted for anywhere between 5-10% of the world’s diamonds.
In the year 2000, the diamond industry launched its own process of self-regulation, called the Kimberely Process. This requires that all rough diamonds be sealed and certified at source, so their background can be traced. Nowadays, it is believed that only 1% of all diamonds are conflict diamonds. Yes, the Kimberly Process has been successful, but even 1% is 1% too many.
Upon purchasing your diamond engagement ring, any reputable jeweller will be able to demonstrate that your diamond has followed the Kimberly Process. Ask them to prove it. If they’ve nothing to hide, then it won’t be a problem.
It takes a joint effort by everyone involved in the jewellery business including, to a certain extent, those consumers purchasing diamonds, to ensure that we all do our bit to stamp out this disgraceful trade in conflict diamonds. After all, a diamond is a token of love, and is not something which should be tarnished by a dark history.
The author is the Managing Director of DeJoria Diamonds, the online diamond engagement rings specialists. For more information, visit http://www.dejoria.co.uk
Basic Knowledge about Choosing The Diamond
August 30th, 2010Diamond is one of the most beautiful gift as well as the most expensive material and wealth of nature. Although human civilization has thousands of years history, it is only a few hundred years that the preliminary understanding of the diamond is. The true uncovery of diamonds is even within a short time.
Prior to this, with its fabulous legend, religious worship and fear, people took it as a symbol of courage, power, status and dignity. Today, diamond is no longer so mysterious. And certainly not only can the aristocracy enjoy the royal family’s treasures, but also can the common persons. For the most part, People tend to see it as a sign of pure love and eternal existence.
For a gift for lover, an engagement present, or even an investment for oneself, the diamond is a wise choice beyond doubt. Before you choose the right diamond, however, there is some basic knowledge you may need.
When it comes to diamond, 4 C’s is always be considered. They are Cut, Clarity, Color and Carat Weight.
First consider color. Colorless diamonds are the best. The deeper color, the worse its quality . Diamonds fall in color grades from D to Z. The one in D is the most desirable. Besides, the colored diamond, like pink diamond, green diamond and blue diamond etc. is collector’s.
Next consider clarity. The most precious diamond is flawless, and they are of course very expensive. Some diamonds would contain scratches, small minerals or other inclusions. It is better to settle on a smaller but less included diamond.
The next to consider is cut. A nice cut can greatly determine the brilliance of a diamond. Even though a diamond in the rough is on the middle of the road, no one would note it. It is cut that endow a diamond with floweriness. You shoud know that the cut must be not too deep or too shallow.
At length, we consider the carat weight of the diamond. As everybody knows, the higher the carat weight, the more valuable the diamond. You will surely seriously decide the size, won’t you?
Keep the 4 C’s we mentioned above in mind, I bet you will find the right diamond!
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