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Topic: Diamond cutting

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	Diamond Wire Technology, LLC - Cutting with Diamond Wire
		Cutting with diamond wire should be considered when there is a need for cutting composites of dissimilar materials, because the gentle cutting action of diamond wire does not smear one material into another and does not snag at the border between two materials.
		Because cutting with diamond wire is a gentle cutting process, and the diamonds used for cutting are micron sized, diamond wire cutting is generally a slow process compared to other cutting methods.
		Cutting with a diamond wire saw generates very little heat because of the size of the diamonds doing the work, and the controlled cutting force that is applied.
	www.diamondwiretech.com /diamond_wire/cut_dia_wire.html (854 words)

	Manufacturing the Diamond \| How Diamonds are Manufactured
		The decision to cut a diamond in a particular shape is dictated by the natural shape of the rough stone.
		Diamond cutting has been a work in progress since the first diamonds were cut in the mid 1300s.
		Cuts have evolved from the first and most simplistic point cut - a basic four-sided cut that resembles the outline of rough octahedral crystals - to the table cut, single cut, old mine cut, old European cut and finally the modern brilliant cut.
	www.diamondideals.com /education/about/manufacturing.cfm (692 words)

	Diamond; cutting and use - Part I
		The general principles of the art of gem cutting have been already considered; the cutting of the diamond, however, on account of the perfect cleavage and enormous hardness of the stone, requires special methods, which must be separately considered.
		By grinding the sharp edge of the second diamond against the first, a nick in the direction in which the stone is to be cleaved is cut to a sufficient depth.
		The rod supporting this diamond is set on a firm elastic base, a sharp, strong chisel is placed in the proper direction in the nick, and the cleavage effected by dealing the chisel a single sharp blow with a hammer.
	www.minelinks.com /alluvial/diamond.html (1141 words)

	Diamond Cutting
		The "Brilliant" cut was introduced in the middle of the seventeenth century.
		The round brilliant cut is preferred when the crystal is an octahedron, as two stones could be cut from one crystal.
		Diamonds have long been prized as a component of jewelry design due to their high light dispersion and extreme hardness.
	www.european-jeweler.com /_diamond_cutting.html (702 words)

	Cutting Diamonds \| Tolkowsky, Eppler & Scan D.N. Ideal Cut
		While the rough stone rotates on the diamond lathe, a second diamond mounted on a dop is pressed against it, rounding the rough diamond into a conical shape.
		The cutting (placing) and polishing of each facet is accomplished by attaching the stone to a dop stick and pressing it against a revolving cast iron disk, scaife, or lap on a Facetron that has been charged with diamond dust.
		This cut is also known as the "Tolkowsky Cut" and "Tolkowsky Brilliant." Even with modern techniques, the cutting and polishing of a diamonds resulted in a loss of as much as 50% of the stone's total weight.
	www.khulsey.com /jewelry/kh_jewelry_diamond_cutting.html (1015 words)

	History of Diamond Cutting and the Round Brilliant Cut.
		The rose cut came into existence in the early sixteenth century and was widely used till the early nineteenth century.
		The old miner was the first diamond cut that had all the facets of the present round brilliant cut viz.
		I consider the old European cut to be the father of the present round brilliant cut.
	www.gemsutra.com /diamond_cutting.html (499 words)

	Early diamond jewels were primarily talismans - Diamonds, Gems
		Diamonds could not be cut at all if not for the fact that the hardness of diamond is not uniform.
		The art of diamond cutting originated in Venice in the early part of the 14th Century and spread to Paris and Antwerp.
		Diamond readily splits in directions parallel to the octahedral faces, and cleaving rapidly removes unwanted material or separates rough into portions which are sepa¬rately fashioned.
	www.wonderxtreme.com /diamond_cutting.htm (372 words)

	Diamonds \| American Museum of Natural History
		By the 16th century the diamonds become larger and more prominent, in response to the development of diamond faceting, which enhances their brilliance and fire.
		Diamonds come to dominate small jewels during the 17th century and large ones by the 18th century.
		Diamond cutting may have arrived in Paris by the late 14th century; for Bruges -- on the diamond trade route -- there is documentation for the technique in 1465.
	www.amnh.org /exhibitions/diamonds/royal.html (371 words)

	Diamond History
		The diamonds possessed magical qualities of the Gods and held powers far beyond the understanding of the common man. Because of these beliefs, the warriors stayed clear of the Kings and others who were fortunate to have the magical diamonds in their breast plates.
		But in South Africa in 1870 diamond was found in the earth far from a river source, and the practice of dry-digging for diamonds was born.
		The earliest reference to diamond cutting is in l550 in Antwerp, the most important diamond center of the period, where a diamond-cutters' guild was soon to be established.
	www.diamondwholesalecorporation.com /DiamondHistory.html (2802 words)

	THE ART OF DIAMOND CUTTING
		Most laymen firmly believe that diamond cutting is steeped in mystery and that its secrets are passed down through families, from one generation to the next.
		Today almost 99 percent of all diamond workers are semiskilled and haven't served any formal apprenticeship in one of the four diamond cutting disciplines that require it.
		While we have tried to cover all necessary aspects of diamond cutting, a warning might be necessary here: A number of diamond cutting schools might spring up at this early stage of development, so always consider what area of diamond cutting you wish to enter, the older, more traditional or the new vision sector.
	www.diamondologist.com /art-dc.htm (820 words)

	Diamond Cut: Cutting and Faceting (Site not responding. Last check: 2007-10-10)
		Since diamonds are the hardest material known (which means they cannot be scratched with any other substance), only diamonds can cut diamonds.
		As the blade turns, it carries small particles of new diamond dust which sticks to the oil and continues the process until the entire diamond is split in two.
		After a diamond is the height and width desired, it is crudely shaped into the round or other shape by rubbing it against another diamond on a high-speed lathe specially designed for the purpose.
	www.diamondhelpers.com /ask/0024-cutfaceting.shtml (548 words)

	Revolution in Diamond Cutting: Laser Sawing of Diamond Crystals
		The desired cut is preprogrammed into a computer linked to the platform; the platform then moves the diamond through the beam in a back-and-forth motion precisely as determined by the system operator.
		As a result, the diamond's molecular structure at this point is converted to graphite on one pass of the beam, with the graphite build-up evaporated or "burned off" on the return pass.
		The width of the cut produced is directly related to the size of the crystal being cut, as a consequence of the V-shaped nature of the beam.
	www.bakergem.com /revindc.html (1336 words)

	Diamond; cutting and use - Part II
		We have thus seen that the three operations in the process of diamond cutting are entrusted to as many classes of skilled workmen, namely cleavers, bruters, and grinders or polishers.
		Only rarely have diamonds been bored and threaded as beads; the art is said to be practiced up to the present day at Venice, in this city being the last remains of an old diamond-cutting industry which once flourished there.
		The boring is effected by the use of diamond powder, the perforation being started with a diamond point and continued with a steel point charged with diamond dust.
	www.minelinks.com /alluvial/diamond1.html (489 words)

	Diamond cutting - Wikipedia, the free encyclopedia
		Diamond Cutting is the art, skill and, increasingly, science of changing a diamond from a rough stone into an attractive gem.
		It is possible only because the hardness of diamond varies widely according to the direction in which one is trying to cut or grind.
		For all shapes ('cuts') of diamond, the cutter has two objectives which often conflict: to preserve the greatest possible amount of the weight of the rough diamond and to produce a cut which is both attractive and highly valued by the marketplace.
	en.wikipedia.org /wiki/Diamond_cutting (349 words)

	Diamond blade selection
		The material to be cut determines what kind of metal bonding agents will be used in the matrix, which holds the diamond chips in the segments on the cutting blade.
		The softer bond will release the diamond chips at the point of maximum utilization without the danger of holding the diamond long enough to be overexposed to heat at the cutting point.
		Cutting five inches deep in hard concrete, fewer diamond segments (more gullets and space between segments) are preferred to keep the blade cool and prevent overheating.
	concreteproducts.com /mag/concrete_diamond_blade_selection/index.html (1209 words)

	CNN.com - Russia's cutting-edge diamond deal - December 20, 2001
		Rough diamonds are extracted from the frozen earth, along with tons of dirt.
		The new diamond agreement is a victory for Alrosa President Vyacheslav Shtirov, who, by the way, is getting plenty of help from the Kremlin in his bid to become governor of the Yakutia region.
		Diamond sales are critical to the economy of Yakutia, a vast region which relies on diamonds for 70 percent of its budget.
	archives.cnn.com /2001/WORLD/europe/12/19/russia.diamonds (510 words)

	Diamond Investments for the future
		The American Institute of Diamond Cutting was established over 20 years ago as an educational institution for the art of diamond cutting and polishing.
		A.I.D.C. graduates are considered the finest craftsmen in the art of diamond cutting and polishing.
		Diamond mining companies are selected and suggested on a wide variety of prerequisites.
	www.diamondschool.com /diamondinvestments.htm (662 words)

	J & M Diamond Tool: PCD and CBN Information
		The diamond and matrix, when sintered together under high temperatures and pressures, creates a PCD tool blank that is high in uniform hardness and is abrasive resistant in all directions.
		Depending on the shape of the natural diamonds and the tool being manufactured, it is sometimes not practical to have the hardest grain on the cutting edge.
		Diamond cutting tools are easily damaged, so the cutting edges should be covered with rubber or plastic caps when they are not in use.
	www.diamondtool.com /pcdcbm2a.html (714 words)

	Diamond - Wikipedia, the free encyclopedia
		Diamond is the hardest natural material known, scoring 10 on the relative Mohs scale of mineral hardness and having an absolute hardness value of between 90, 167, and 231 gigapascals in various tests.
		Diamonds which are not cut to the specifications of Tolkowsky's round brilliant shape (or subsequent variations) are known as "fancy cuts." Popular fancy cuts include the baguette (from the French, meaning rod or loaf of bread), marquise, princess (square outline), heart, briolette (a form of the rose cut), and pear cuts.
		Cuts are influenced heavily by fashion: the baguette cut—which accentuates a diamond's luster and downplays its fire—was all the rage during the Art Deco period, whereas the princess cut—which accentuates a diamond's fire rather than its luster—is currently gaining popularity.
	en.wikipedia.org /wiki/Diamond (8714 words)

	CVD diamond film cutting tools provide superior performance due to their exceptional chemical and thermal stability.
		CVD diamond film cutting tools provide superior performance due to their exceptional chemical and thermal stability.
		Diamond is the hardest substance on earth, has a very low coefficient of friction and coefficient of thermal expansion and exhibits thermal conductivity several times that of copper.
		CVD diamond tools provide performance 2 to 3 times that of PCD tools because of these properties and its superior chemical and thermal stability.
	www.usapplieddiamond.com /cuttingcopy.html (101 words)

	Schumacher diamond cutters, diamond cutting for over 5000 Jewelers. (Site not responding. Last check: 2007-10-10)
		Diamond Cutting since 1972, Schumacher Diamond Cutters services include recutting and repairing of chipped and broken polished loose diamonds, the manufacturing of gem rough diamonds and the processing of specialized industrial diamond applications.
		Schumacher Diamond Cutters has always been a pioneer in the use and development of advanced technologies in the diamond manufacturing industry.
		Our diamond cutters are a highly trained and dedicated group of craftsmen, who work together as a team to insure that you receive the highest quality of service available in the industry today.
	www.schumacherdiamond.com (210 words)

	EQUIPMENT.NET: Diamond cutting Equipment, Diamond, cutting, Machine, Tools, Bid, Buy, Sell, Lease, Rent, Trade, New, ...
		Diamond Tool - specializes in the design and manufacture of polocrystalline and natural diamond tooling, diamond dressing and cleaving tools.
		Hydrostress AG - equipment for diamond sawing and drilling of concrete and stone in construction.
		Kirin Diamond Industrial Co - manufacturer and exporter of blades, cutters, and polishers for concrete and stone cutting industries.
	www.equipment.net /list/diamondcuttingequipment.htm (651 words)

	Diamante Diamond Cutting Faceting Machines
		The Diamante is the only portable diamond cutting machine on the market, and is a very robust machine.
		An avid reader who makes a study of this text, and who is determined to become a diamond cutter, can acquire the necessary insight into the crystallography of diamonds and the highly specialized tools and techniques involved in cutting them.
		This text may also serve to profitably convince some colored stone faceters who are interested in cutting diamonds, but who are still unfamiliar with the complexities involved in the art of diamond cutting, that cutting diamonds may not be suitable for them as a hobby or vocation after all.
	www.facetingmachines.com /diamante.shtml (606 words)

	Diamond Expedition - Diamond and Jewelry Wholesaler
		The most important factor when cutting a diamond is the actual marking of the rough stone.
		An example is if the stone has inclusions on one side of the diamond and is clean on the other you want to saw the stone in half as close as you can to the inclusions so you can have half the stone eye clean while the other may have several inclusions.
		The process of cutting a diamond is a very skilled profession and should only be attempted by one who does this full time and has been is located in the heart of the diamond profession.
	www.jgdiamonds.com /company_cutting_factory.cfm (349 words)

	Diamond Cutting Styles in South Africa
		Cut and cutting style work in harmony to create a diamond's brilliance.
		This cut has rows of facets that resemble the steps of a staircase and are usually four-sided and elongated.
		The Baguette is a rectangular-shaped diamond with rows of step-like facets.
	www.diamonds.co.za /index.php?pr=Diamond_Cutting_Styles (309 words)

	HCA - defining ideal cut diamonds (Site not responding. Last check: 2007-10-10)
		This led to a long and passionate interest in the cut of diamonds.
		After the publication of the GIA’s ‘brilliance’ report in 1998 this passion became a crusade to improve the cut quality of all diamonds.
		HCA has been used to grade the cut quality of more than a billion dollars of diamonds in its first year alone.
	www.diamond-cut.com.au (132 words)

	Diamond Tools Ltd - HOME tile cutting with diamond - diamond blades and drills - brick cutting with diamonds - diamond ...
		Diamond Tools Ltd - HOME tile cutting with diamond - diamond blades and drills - brick cutting with diamonds - diamond plated tooling -
		We are a family owned business, supplying Diamond Tools and Machinery to many industries since 1988.
		As we are a family company we are more flexible, enabling us to custom manufacture diamond cutting products to suit individual needs.
	www.diamond-tools.co.nz (167 words)

	Diamond Cutting Proces
		The rough diamond is prepared, sawed and the stone is brutted (made round).
		First 4 then 8 main facets are placed on the pavilion and the crown, and then the diamond is given its second cut again to make sure it is as round as possible.
		Because of diamond's refractive index, the pavilion (bottom of the diamond that comes to a point) needs to be cut at an exacting angle.
	www.pricescope.com /hearts_cutproc.asp (183 words)

	Bluegrass Diamond Wire Cutting
		Diamond wire cutting frees up large sections of reinforced concrete, quickly and quietly, without vibration and dust, while leaving a smooth exposed area.
		Bluegrass diamond wire saws are run by powerful electric hydraulic, pollution-free units, which roll on wheels and easily plug into 440 vac, 3 phase, 60 amp service outlets.
		In addition to customizing cutting techniques, Bluegrass works at their facility, with The Machine Shop (CNC) and The Fab Shop to construct specialized cutting tools and equipment.
	www.bluegrassbit.com /dwc.html (105 words)

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