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History Of Man Made DiamondsTranslationTranslate  
Henri Moissan (1852-1907) received the Nobel Prize in Chemistry in 1906. In 1892 theorized that by crystallizing carbon with pressure and heat from molten iron he could make diamonds. The then set out to prove his theory by designing and building an electric-arc furnace. He subsequently was able to product several tiny stones that had the same properties as mined diamonds. Thus the start of the man made diamond race was born. The experiment was successfully repeated by Ruffin in 1917 and again by Dr Willard Hershey in 1926. The diamond that was created by Dr Willard Hershey is on display in Kansas at the McPherson Museum. Despite the earlier success, the following experimenters had great difficulty in reproducing the required temperatures and pressures needed by the process and some of the experimenters even lost their lives to explosions. In 1941 General Electric was able to produce a one carat diamond but of very poor quality. It was not until 1954 that General Electric was able to produce commercially synthesis diamonds of a size and quality to be used in the industrial abrasives market. Today over 600 metric tons of commercially produced diamonds are produced for the industrial abrasives market and about 26 metric tons of mined diamonds are produced for gemstone market yearly. Today there are two methods used to produce gem quality diamonds. The first is the High Pressure High Temperature (HPHT). If pure carbon in put under pressures of 50,000 atmospheres and temperatures between 1100, and 1400 degrees Celsius will reproduce the environment that creates diamonds inside the Earths core. Companies like Gemesis, New Age Diamonds, Adia Diamonds and Tairus all utilize the HPHT method of producing gem quality man made diamonds. Clear or White diamonds must be produced in an environment that is free of impurities like nitrogen and boron which makes them very difficult and costly to produce. Most diamonds created by the HPHT method will contain some color. Yellow or orange tint occurs when nitrogen atoms replace 5 or more carbon atoms out of each 10,000 atoms. At a level of one or a few boron atoms for every million-carbon atom is replaced, an attractive blue color results. The second method used to produce gem quality diamonds is called Chemical Vapor Deposition (CVD). When pure carbon and hydrogen is heated to about 1,8000 degrees Fahrenheit a plasma cloud is formed. As the plasma cools carbon will rain out of the mixture and carbon atoms will be deposited on wafer seeds. The wafers will grow at about 1/2 a millimeter a day. The ability to control the injection of impurties allows a greater measure of control in the final diamond composition than the HTHP method. Apollo Diamond uses the CVD method of producing the larger and more expensive man made diamonds. Man-made diamonds are very difficult to distinguish from natural ones. A trained jeweler could tell the difference if he could detect the different growth patterns and the lack of inclusions. Inclusions are the tiny bits of material that are usually imbedded in a natural diamond and are considered a flaw. The ability to be able to control the amount and type of inclusion is vital to the ability of the man made diamond to be used in semiconductor applications which in turn will lead to the next generation of computer chips.
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A04 Facts About Black Diamonds A05 The Facts About Blue Diamonds A06 Facts About Champagne Diamonds A07 Facts About Pink Diamonds A08 Facts About Yellow Diamonds A09 Facts About Green Diamonds A10 Facts About White Diamonds A11 World Famous Diamonds 1 A12 World Famous Diamonds 2 A13 Why Are Some Diamonds Colored A14 Facts About Man Made Diamonds A15 World Famous Diamonds 3 A16 The 4cs Of Diamond Grading A17 World Famous Diamonds 4 A18 World Famous Diamonds 5 A19 Diamonds And The Computer Industry A21 History Of Synthetic Diamonds A22 World Famous Diamonds 6 A23 Tips For Buying Emerald Cut Diamonds A24 Everyone Wants Big Diamonds A25 Facts About Rough Diamonds A26 Find Your Own Diamond Mine A27 Crater Of Diamonds State Park A28 Buying A Diamond Engagement Ring A29 What To Look For When You Buy Diamond Jewelry A30 The Secrets To Purchasing Diamond Wedding Rings A31 How To Compare The Price Of Diamonds A32 Tips For Buying Princess Cut Diamonds A33 Should You Invest In Certified Diamonds A34 Diamonds From Sierra Leon A35 Are Diamonds Valuable A36 Are Those Diamonds Real A37 What Went Into Getting Those Diamond Cuts A38 Do You Need A Diamond Anniversary Ring A39 Finding A Diamond Buyer A40 What To Look For In A Diamond Wholesaler A41 Where You Can Find A Discount Diamond A42 How To Choose A Platinum Diamond Ring |
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