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Diamond Symbol Diamond Symbol Preview Variations VideoThe Symbol of the Diamond Necessary cookies are absolutely essential Crypto Games the website to function properly. It has four sides, and all sides are equal in length. If your keyboard contains separate NumPad, you should be sure that it is enabled. Click to Copy Copy Diamond Symbol.
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Necessary Necessary. Non-necessary Non-necessary. Charlemagne coins, denier or denaro ca. Belitung shipwreck , Tang Dynasty ca.
Traditional sown field pattern of Western Ukraine. Rongorongo proto-writing , possible lunar calendar calculating device.
Epigonation in Eastern Christianity. Greek Classical elements. In Ecclesiastical heraldry lozenge shape is reserved for females.
Women Airforce Service Pilots Badge. Philippine Air Force roundel. National flag of Saint Vincent and the Grenadines. Rune -shaped designs five-lozenges cross and heart on the gable of Ledringhem 's church.
Sown fields in an open field system of farming. From Wikipedia, the free encyclopedia. Redirected from Diamond symbol. Form of rhombus.
This article is about the shape. For the cough tablets, see Throat lozenge. For the heraldic element, see Lozenge heraldry. For other uses, see Diamond disambiguation.
This section needs additional citations for verification. And if you are using Windows, simply press down the Alt key and type 4 using the numeric keypad on the right side of your keyboard.
The table below contains everything you need to know to be able to type this symbol on both Windows and Mac. As you may already know, there are several dual-purpose keys on the keyboard for both Windows and Mac.
That is to say that there are symbols readily available as second keys on the keyboard. Just by pressing two or more keys simultaneously, you can easily insert such symbols into your work.
And the firm created new markets in countries where no diamond tradition had existed before. Ayer's marketing included product placement , advertising focused on the diamond product itself rather than the De Beers brand, and associations with celebrities and royalty.
Without advertising the De Beers brand, De Beers was advertising its competitors' diamond products as well,  but this was not a concern as De Beers dominated the diamond market throughout the 20th century.
De Beers still advertises diamonds, but the advertising now mostly promotes its own brands, or licensed product lines, rather than completely "generic" diamond products.
Brown-colored diamonds constituted a significant part of the diamond production, and were predominantly used for industrial purposes.
They were seen as worthless for jewelry not even being assessed on the diamond color scale. After the development of Argyle diamond mine in Australia in , and marketing, brown diamonds have become acceptable gems.
Industrial diamonds are valued mostly for their hardness and thermal conductivity, making many of the gemological characteristics of diamonds, such as the 4 Cs , irrelevant for most applications.
The boundary between gem-quality diamonds and industrial diamonds is poorly defined and partly depends on market conditions for example, if demand for polished diamonds is high, some lower-grade stones will be polished into low-quality or small gemstones rather than being sold for industrial use.
Within the category of industrial diamonds, there is a sub-category comprising the lowest-quality, mostly opaque stones, which are known as bort.
Industrial use of diamonds has historically been associated with their hardness, which makes diamond the ideal material for cutting and grinding tools.
As the hardest known naturally occurring material, diamond can be used to polish, cut, or wear away any material, including other diamonds. Common industrial applications of this property include diamond-tipped drill bits and saws, and the use of diamond powder as an abrasive.
Less expensive industrial-grade diamonds, known as bort, with more flaws and poorer color than gems, are used for such purposes.
Specialized applications include use in laboratories as containment for high-pressure experiments see diamond anvil cell , high-performance bearings , and limited use in specialized windows.
The high thermal conductivity of diamond makes it suitable as a heat sink for integrated circuits in electronics.
The mining and distribution of natural diamonds are subjects of frequent controversy such as concerns over the sale of blood diamonds or conflict diamonds by African paramilitary groups.
Only a very small fraction of the diamond ore consists of actual diamonds. The ore is crushed, during which care is required not to destroy larger diamonds, and then sorted by density.
Today, diamonds are located in the diamond-rich density fraction with the help of X-ray fluorescence , after which the final sorting steps are done by hand.
Before the use of X-rays became commonplace,  the separation was done with grease belts; diamonds have a stronger tendency to stick to grease than the other minerals in the ore.
Historically, diamonds were found only in alluvial deposits in Guntur and Krishna district of the Krishna River delta in Southern India. Diamond extraction from primary deposits kimberlites and lamproites started in the s after the discovery of the Diamond Fields in South Africa.
Most of these mines are located in Canada, Zimbabwe, Angola, and one in Russia. In the U. The Crater of Diamonds State Park in Arkansas is open to the public, and is the only mine in the world where members of the public can dig for diamonds.
In some of the more politically unstable central African and west African countries, revolutionary groups have taken control of diamond mines , using proceeds from diamond sales to finance their operations.
Diamonds sold through this process are known as conflict diamonds or blood diamonds. In response to public concerns that their diamond purchases were contributing to war and human rights abuses in central and western Africa, the United Nations , the diamond industry and diamond-trading nations introduced the Kimberley Process in This is done by requiring diamond-producing countries to provide proof that the money they make from selling the diamonds is not used to fund criminal or revolutionary activities.
Although the Kimberley Process has been moderately successful in limiting the number of conflict diamonds entering the market, some still find their way in.
This is a stringent tracking system of diamonds and helps protect the "conflict free" label of Canadian diamonds.
Synthetic diamonds are diamonds manufactured in a laboratory, as opposed to diamonds mined from the Earth. The gemological and industrial uses of diamond have created a large demand for rough stones.
This demand has been satisfied in large part by synthetic diamonds, which have been manufactured by various processes for more than half a century.
However, in recent years it has become possible to produce gem-quality synthetic diamonds of significant size.
The majority of commercially available synthetic diamonds are yellow and are produced by so-called high-pressure high-temperature HPHT processes.
Other colors may also be reproduced such as blue, green or pink, which are a result of the addition of boron or from irradiation after synthesis.
Another popular method of growing synthetic diamond is chemical vapor deposition CVD. The growth occurs under low pressure below atmospheric pressure.
It involves feeding a mixture of gases typically 1 to 99 methane to hydrogen into a chamber and splitting them to chemically active radicals in a plasma ignited by microwaves , hot filament , arc discharge , welding torch or laser.
A diamond simulant is a non-diamond material that is used to simulate the appearance of a diamond, and may be referred to as diamante. Cubic zirconia is the most common.
The gemstone moissanite silicon carbide can be treated as a diamond simulant, though more costly to produce than cubic zirconia.
Both are produced synthetically. Diamond enhancements are specific treatments performed on natural or synthetic diamonds usually those already cut and polished into a gem , which are designed to better the gemological characteristics of the stone in one or more ways.
These include laser drilling to remove inclusions, application of sealants to fill cracks, treatments to improve a white diamond's color grade, and treatments to give fancy color to a white diamond.
Coatings are increasingly used to give a diamond simulant such as cubic zirconia a more "diamond-like" appearance. One such substance is diamond-like carbon —an amorphous carbonaceous material that has some physical properties similar to those of the diamond.
Advertising suggests that such a coating would transfer some of these diamond-like properties to the coated stone, hence enhancing the diamond simulant.
Techniques such as Raman spectroscopy should easily identify such a treatment. Early diamond identification tests included a scratch test relying on the superior hardness of diamond.
This test is destructive, as a diamond can scratch another diamond, and is rarely used nowadays. Instead, diamond identification relies on its superior thermal conductivity.
Electronic thermal probes are widely used in the gemological centers to separate diamonds from their imitations. These probes consist of a pair of battery-powered thermistors mounted in a fine copper tip.
One thermistor functions as a heating device while the other measures the temperature of the copper tip: if the stone being tested is a diamond, it will conduct the tip's thermal energy rapidly enough to produce a measurable temperature drop.
This test takes about two to three seconds. Whereas the thermal probe can separate diamonds from most of their simulants, distinguishing between various types of diamond, for example synthetic or natural, irradiated or non-irradiated, etc.
Those techniques are also used for some diamonds simulants, such as silicon carbide, which pass the thermal conductivity test. Optical techniques can distinguish between natural diamonds and synthetic diamonds.
They can also identify the vast majority of treated natural diamonds. Laboratories use techniques such as spectroscopy, microscopy and luminescence under shortwave ultraviolet light to determine a diamond's origin.
Several methods for identifying synthetic diamonds can be performed, depending on the method of production and the color of the diamond.
CVD diamonds can usually be identified by an orange fluorescence. Screening devices based on diamond type detection can be used to make a distinction between diamonds that are certainly natural and diamonds that are potentially synthetic.
Those potentially synthetic diamonds require more investigation in a specialized lab. Occasionally, large thefts of diamonds take place.
The gang broke through a perimeter fence and raided the cargo hold of a Swiss-bound plane. The gang have since been arrested and large amounts of cash and diamonds recovered.
The identification of stolen diamonds presents a set of difficult problems. Rough diamonds will have a distinctive shape depending on whether their source is a mine or from an alluvial environment such as a beach or river—alluvial diamonds have smoother surfaces than those that have been mined.
Determining the provenance of cut and polished stones is much more complex. The Kimberley Process was developed to monitor the trade in rough diamonds and prevent their being used to fund violence.
Before exporting, rough diamonds are certificated by the government of the country of origin. Some countries, such as Venezuela, are not party to the agreement.
The Kimberley Process does not apply to local sales of rough diamonds within a country. Diamonds may be etched by laser with marks invisible to the naked eye.
Lazare Kaplan , a US-based company, developed this method. However, whatever is marked on a diamond can readily be removed. Diamonds have been treasured as gemstones since their use as religious icons in ancient India.
Their usage in engraving tools also dates to early human history. In , the French scientist Antoine Lavoisier used a lens to concentrate the rays of the sun on a diamond in an atmosphere of oxygen , and showed that the only product of the combustion was carbon dioxide , proving that diamond is composed of carbon.
From Wikipedia, the free encyclopedia. This article is about the mineral. For the gemstone, see Diamond gemstone.
Allotrope of carbon often used as a gemstone and an abrasive. The slightly misshapen octahedral shape of this rough diamond crystal in matrix is typical of the mineral.
Its lustrous faces also indicate that this crystal is from a primary deposit. Main article: Material properties of diamond. See also: Crystallographic defects in diamond.
Main article: Diamond color. Main article: Extraterrestrial diamonds. A round brilliant cut diamond set in a ring.
Main article: Diamond gemstone. Main articles: Diamond cutting and Diamond cut. See also: List of diamond mines and Exploration diamond drilling.
Play media. Main articles: Kimberley Process , Blood diamond , and Child labour in the diamond industry.
Main article: Synthetic diamond. Main article: Diamond simulant. Main article: Diamond enhancement. Minerals portal.
Retrieved July 7, In Delhaes, Pierre ed. Graphite and precursors. Noyes Publications. In Paoletti, A.
If you continue browsing, we consider that you accept their use. Representation of Diamond Symbol The diamond is considered as a symbol of light life and the sun.
How to type Diamond Symbol To type the diamond symbol in a document, follow the below-listed ways: On Windows: You should hold down the "ALT" key button and then type "4" on your keyboard's keypad.
How to use and type Diamond symbol code? If your keyboard contains separate NumPad, you should be sure that it is enabled.
If it is not, press the Num Lock key to activate it then press hold down the Alt key on the left side. Type the number that represents that character or the symbol you want to insert and then release the insert key.This is how you may copy and paste the Diamond sign using the Character Map on Windows. Typically yellow, brown, or gray to colorless. Economic Tipico Auszahlen Principles and Practice. That is to say, this heat treatment partially removes oxygen-containing functional groups. Turning And Mechanical Manipulation. As the early royal families, aristocrats, and wealthy families held collections of diamonds, and it is not uncommon to Shogun Buch diamonds of adorn wallets, bags, phone cases, or even clothing. The Diamond Symbol of the diamond's four angles Rubies Deutsch degrees. Archived from the original PDF on September 30, The diamond crystal lattice is exceptionally strong, and only atoms of nitrogenboron and hydrogen can be introduced into diamond during the growth at significant concentrations up to atomic percents. The table below contains Em Tippquoten you need to know to be able to type this symbol on Spielautomaten Mit Bluetooth Hacken Windows and Mac. The Diamond Symbol shortcut for Microsoft Word is , Alt+X. These shortcuts work in Microsoft Word and Windows only. To use this shortcut, obey the following instructions: Place the insertion pointer in the right place. Type on your keyboard, then press Alt + X. This will convert the code () into the Diamond symbol at where you. Diamond Symbol Alt Codes, HTML Code (Copy and Paste) Here is the list of alt codes for diamond symbols. You can copy and paste diamond symbol in Word, Excel, and PowerPoint or use alt codes to make various kinds of diamond. Just click on a symbol to copy. If you want to use the diamond symbol in HTML documents use HTML code. Diamond Symbol [♦] Quick Guide. To type the Diamond Symbol on Mac, press Option + Shift + V shortcut on your keyboard. For Windows users, simply press down the Alt key and type 4 using the numeric keypad, then let go of the Alt key. These Diamond sign shortcuts can work on any software including MS Word, Excel, and PowerPoint, on both Windows.