give me information about diamond please?
98645
Diamond is carbon in its most concentrated form. Except for trace impurities like boron and nitrogen, diamond is composed solely of carbon, the chemical element that is fundamental to all life.\n\nBut diamond is distinctly different from its close cousins the common mineral graphite and lonsdaleite, both of which are also composed of carbon. Why is diamond the hardest surface known while graphite is exceedingly soft? Why is diamond transparent while graphite is opaque and metallic black? What is it that makes diamond so unique? \n\nThe key to these questions lie in diamond's particular arrangement of carbon atoms or its crystal structure--the feature that defines any mineral's fundamental properties. A crystal is a solid body formed from the bonding of atomic elements or compounds in a repeating arrangement. Often, crystals possess smooth external faces. Due to their symmetrical and finite nature, the building blocks of crystals are limited to relatively small numbers of atoms, and their chemical compositions to simple numerical combinations of elements.\n\nA neutral carbon atom has 6 protons and 6 electrons surrounding its nucleus. Four of the electrons in a carbon atom are valence electrons, which are electrons that are available to form bonds with other atoms. In graphite, each carbon atom bonds only 3 of its 4 valence electrons with neighboring carbons. The resulting structure of these bonds is a flat sheet of connected carbon atoms. Though individually strong, these layers are only weakly connected to one another, and the ease with which they are separated is what makes graphite so slippery.\n \nIn diamond however, every carbon shares all 4 of its available electrons with adjacent carbon atoms, forming a tetrahedral unit. This shared electron-pair bonding forms the strongest known chemical linkage, the covalent bond, which is responsible for many of diamond's superlative properties. The repeating structural unit of diamond consists of 8 atoms which are fundamentally arranged in a cube.\n\nUsing this cubic form and its highly symmetrical arrangement of atoms, diamond crystals can develop in a variety of different shapes known as "crystal habits." The octahedron, or eight-sided shape that we associate with diamonds is its most common crystal habit. But diamond crystals can also form cubes, dodecahedra, and even combinations of these shapes. All of these shapes are manifestations of the cubic crystal system to which the mineral diamond belongs. Two exceptions are the flat form called a macle, which is actually a composite crystal, and etched crystals, which have rounded surfaces and, sometimes, elongated shapes.\n\nReal diamond crystals don't have completely smooth faces. Trigons are triangular growths that reflect subtle changes in height on a diamond's face. The trigons shown here are slight indentations that were most likely produced by a natural etching of the crystal. However, raised trigons, which point in the same direction as the crystal face, may also occur from etching, dissolution, or as part of the natural growth of the crystal.\n\nDiamond is renowned for its hardness. Hardness is the measure of a substance's resistance to being scratched, and only a diamond can scratch another diamond. Diamond is the hardest substance known.\n\nHardness is not the only measure of a mineral's durability--the relative resistance to fracture is another. Although diamond is not fragile or prone to breaking apart, all substances including diamond can fracture or shatter. Due to its particular crystal structure, diamond has certain planes of weakness along which it can be split. Diamond is said to have perfect cleavage in four different directions, meaning it will separate neatly along these lines rather than in a jagged or irregular fashion. This is because the diamond crystal has fewer chemical bonds along the plane of its octahedral face than in other directions. Diamond cutters take advantage
131868
MAKE a diamond?  What are you, Superman?\n\nThe reason diamonds are so expensive is because they cannot be made easily.  The amount of energy required to make a tiny little diamond far exceeds the potential value of the diamond.  That's why you don't see anyone making them.\n\nAt this point in our technological advancement, we have the ability to make nearly everything.  But it's usually not a question of "Can we do it?" but "What's the chepeast way to get it?"  Right now it's cheaper to find diamonds in the earth than it is to make them.
898106
Assuming you mean the color grade of "I" or "G" it would be a "near colorless" or middle of the road diamond with respect to its color.  \n\nHowever, other factors, such as clarity, cut and carat weight also affect the overall quality of a diamond, so its impossible to tell a gem's quality from just the color alone.
825778
diamonds exhibit rare beauty because of its characteristics (very high index of refraction) and every woman wants one. (diamonds ara a girl's best friend, but not mine hehe)\ndemand of the market.\ndiamonds are not found easily.\ndiamonds are hard (to cut and polish)\nand because the first one who saw a diamond thought he could make a lot of money.\n\nactually, you can grow or make your own diamond out of coal (yup...carbon)\nbut you'll have to be millions of years old to already own one...
518908
The reason they are called "diamonds" is due to their shape. The name Herkimer originates from Herkimer County in New York State from which they are mined.\n\nHerkimer diamonds are quartz crystals. The crystals are fully formed on both ends & are said to be doubly terminated. Sometimes they have smaller crystals sticking out the sides.\n\nQuartz is one of the most common minerals in the earth's crust & is made up of silicon & oxygen. The chemical formula is SiO2. Diamonds are made completely from carbon. The only carbon in a Herkimer diamond is the tiny bits of black organic matter found in them. These are referred to as inclusions.\n\nI have one in my classroom. Kids hear 'diamond' & go nuts. I hear, "How much is it worth??" When I tell them not worth much they usually lose interest. LOL
207264
Getting an accurate history of diamond prices is difficult since different types have appreciated differently. I don't have estimates for 2005. If you  look at the 1st link (page 4) you will see that rough diamond prices have gone from ~1000 to ~1800 from 1980 to 2004, an increase of 80%. From the second link you can see the consumer price index went from 246.8 to 565.7, an increase of 129%.  Rough diamond prices have gone up less than inflation.  (I can't find comparable figures for cut diamonds, but they tend to follow rough prices.)  The next problem is that you buy retail and sell wholesale, and the wholesale price is often 1/2 of retail. (See third and fourth links) I don't think of diamonds as a good investment. (Except my wife likes the one I got her, so it was a good investment from that standpoint)
307602
isn't it the "Hope" diamond
150844
check out this web site maybe this will help you i personally think you should go with a real diamond it doesn't have to be huge and expensive \nhttp://www.russianbrilliants.net/russian_ice_faq.html
478447
I think it's Diamond...
1186958
I know the answer. One word. DIAMONDS. lol
697410
A diamond is a crystal structure, and thus, exists only as a solid.  If you melt or boil a diamond (at incredibly high temperature) it is no longer a diamond, but carbon.
1170138
The table and depth are a little larger than what is desired... The ideal cut yields a 53-56% Table and a Depth of 60-62%... The depth is a bit more worrysome than the table, as it will effect the brilliance of the diamond a lot more than a large table... but overall it is not a bad cut, just not a great one... I would think that is around average, keep in mind that very well cut diamonds will demand a premium... ideal cut stones will sell for 40% or more above an average cut stone...\n\nignore that, those are stats for round cut stones, I don't know much about cushion...
1099606
http://www.diamondmanufacturer.com/tutorial/certificate.htm\nTry this link
87209
The 4 things that are the most important when choosing a diamond are the "4 C's"\n\nThe 4Cs are comprised of Carat, Clarity, Color and Cut. \n\nCARAT      \nDiamonds and other gemstones are measured in carat weight. One carat equals 1/5th of a gram. You might hear the term "points" in reference to diamond weight. There are 100 points in a carat. For example, a "75 point" diamond weighs .75 of a carat. \n\nCLARITY\n      \nDiamond clarity is graded according to the GIA Clarity Grading Scale. The clarity of a diamond refers to how clean or included the diamond is when viewed under 10x magnification. Most diamonds contain some inclusions, formed during their crystallization process. Inclusions refer to small crystalline fractures or irregular crystal growth in the diamond material, most of which are microscopic in nature and cannot be seen with the naked eye. \n\nCOLOR\n     \nDiamond color is graded according to the Gemological Institute of America (GIA) Color Grading Scale. As most educated diamond shoppers are aware, the more colorless a diamond is, the whiter it will appear. When diamonds are graded for color, it is preferable to do so against a white background so that no color is absorbed by the diamond from its surroundings. \n\nCUT\n     \nThe cut of the diamond is the most important and perhaps the most misunderstood and controversial of the 4Cs. Diamond dealers refer to cut as "make," and it is the only feature of a diamond that can be controlled by man. \n\nRemember that shopping for an engagement ring for your future wife is one of the most important purchases you will ever make (since this is the last ring she'll ever wear...other than her wedding ring of course!).  Be an informed shopper and choose wisely.
77745
Diamond is one of the two best known forms (or allotropes) of carbon, whose hardness and high dispersion of light makes it useful for industrial applications and jewelry (the other equally well known allotrope is graphite). Diamonds are specifically renowned as a mineral with superlative physical qualities - they make excellent abrasives because they can only be scratched by other diamonds, which also means they hold a polish extremely well and retain luster. About 130 million carats (26,000 kg) are mined annually, with a total value of nearly USD $9 billion.\n\nThe name "diamond" derives from the ancient Greek adamas (αδάμας; "impossible to tame"). They have been treasured as gems since their use as religious icons in India at least 2,500 years ago—and usage in drill bits and engraving tools also dates to early human history. Popularity of diamonds has risen since the 19th century because of improved cutting and polishing techniques, and they are commonly judged by the "four Cs": carat, clarity, color, and cut. Although nearly four times the mass of natural diamonds are produced as synthetic diamond each year, the vast majority of synthetic diamond production remains small, imperfect diamonds suitable only for industrial-grade use, with gem-quality synthetic diamonds only recently becoming available.
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http://jewelry.about.com/cs/diamondclarity/a/judge_clarity.htm\nnot sure about the tool but here's a site to teach you how to evaluate diamond.
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bcoz DIAMOND has the highest value of refractive index\n2.41\nany little amount of light present has to pass thru diamond \nso diamond glitters all the time