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Topic: Material properties of diamond

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Diamond color

Diamond

Diamond simulant

Diamond cutting

Synthetic diamond

Diamond (disambiguation)

Dresden Green Diamond

Ultrahard fullerite

Moissanite

Kimberley Process

Cubic zirconia

Carbon

Boron nitride

Beta carbon nitride

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	Material properties of diamond - Wikipedia, the free encyclopedia
		Diamond is transparent to opaque, optically isotropic crystalline carbon.
		The faces of diamond octahedrons are highly lustrous due to their hardness; growth defects in the form of trigons or etch pits are often present on the faces, the former being triangular pits whose points are aligned with the faces of the octahedron.
		This property is exploited in the use of so-called "grease pens," which apply a line of grease to the surface of a suspect diamond simulant.
	en.wikipedia.org /wiki/Material_properties_of_diamond (2654 words)

	diamond Information Center - diamond rings
		Diamonds have also rarely been found in deposits left behind by glaciers (notably in Wisconsin and Indiana); however, in contrast to alluvial deposits, glacial deposits are not known to be of significant concentration and are therefore not viable commercial sources of diamond.
		Diamonds do not show all of their beauty as rough stones; instead, they must be cut and polished to exhibit the characteristic fire and brilliance that diamond gemstones are known for.
		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, resembling a loaf of bread), marquise, princess (square outline), heart, briolette (a form of the rose cut), and pear cuts.
	www.scipeeps.com /Sci-Chemistry_Topics_Co_-_D/diamond.html (8055 words)

	Argonne CNM Highlight: New Diamond Nanotube Composite Material Created (Site not responding. Last check: 2007-11-03)
		“Diamond is hard because of its dense atomic structure and the strength of the bonds between atoms,” said John Carlisle, one of the developers of the new material.
		Diamond is a brittle material and is normally not electrically conducting.
		The diamond and iron “seeds” catalyzed the UNCD and carbon nanotube growth, respectively, and the plasma temperature and deposition time were regulated to control the speed at which the composite material grows, since carbon nanotubes normally grow much faster than UNCD.
	nano.anl.gov /news/highlights/2005_nanotube_composite.html (440 words)

	Diamonds Information Portal @ ClearestDiamonds.com (Clearest Diamonds) (Site not responding. Last check: 2007-11-03)
		A diamond is a nitrogen Diamond News of Karyssia, Queen of Diamonds bonded carbon atoms.
		The News of diamond has a two atom basis at (0,0,0) and (1/4,1/4,1/4), which means half of the atoms are at lattice points and the other half are offset by (1/4,1/4,1/4), where 1 is the length of a side of the unit cell.
		Diamond is the Diamond color natural material known, scoring 10 on the relative Dell Diamond and having an absolute hardness value of between 90, 167, and 231 crystal lattice in various tests.
	www.clearestdiamonds.com (2659 words)

	Argonne researchers create new diamond-nanotube composite material
		Diamond is called the hardest material because of its ability to resist pressure and permanent deformation, and its resistance to being scratched.
		“Diamond is hard because of its dense atomic structure and the strength of the bonds between atoms,” said Argonne's John Carlisle, one of the developers of the new material.
		The diamond and iron “seeds” catalyze the UNCD and carbon nanotube growth, respectively, and the plasma temperature and deposition time are regulated to control the speed at which the composite material grows, since carbon nanotubes normally grow much faster than ultrananocrystalline diamond.
	www.physorg.com /news6116.html (753 words)

	Diamond
		Diamond has many outstanding physical and chemical properties such as extreme hardness, low coefficient of friction, corrosion resistance, ability to emit electrons and the ability to transmit sound faster than any other material.
		Thermal conductivity in diamond is five times higher than that of copper and at the same time it is electrically insulator, which make diamond as an ideal candidate for thermal management applications.
		Diamond is chemically inert and transparent from UV to the far IR spectrum.
	www.eng.usf.edu /~akumar/res/diamond.htm (1082 words)

	Diamond jewelry,wedding ring, engagement rings, jewelry diamonds, gold band - Diamond - Material Properties (Expanded)
		Trace impurities interstitially replacing carbon atoms in a diamond's crystal lattice, and in some cases structural defects, are responsible for the wide range of colors seen in diamond.
		Cape series diamonds have a visible absorption spectrum (as seen through a direct-vision spectroscope) consisting of a fine line in the violet at 415.5 nm—however, this line is often invisible untill the diamond has been cooled to very low temperatures.
		Diamond's thermal conductivity is made use of by jewellers and gemologists who may employ an electronic thermal probe to separate diamonds from their imitations.
	www.philipnoel.com /showpages.asp?pid=1030 (2617 words)

	Diamond - Molecule of the Month
		Diamond has been prized for centuries as a gemstone of exceptional brilliance and lustre.
		In diamond we have the hardest known material, in graphite we have one of the softest, simply by rearranging the way the atoms are bonded together.
		The diamond crystals that are produced by this method are typically a few mm in size, which are too flawed for use as gemstones, but are extremely useful as hard-wearing edges on cutting tools and drill-bits.
	www.bris.ac.uk /Depts/Chemistry/MOTM/diamond/diamond.htm (707 words)

	Diamond: Color, Cut, Clarity, Carat; Cleaning; History (Site not responding. Last check: 2007-11-03)
		of diamond has a two atom basis at (0,0,0) and (1/4,1/4,1/4), which means half of the atoms are at lattice points and the other half are offset by (1/4,1/4,1/4), where 1 is the length of a side of the unit cell.
		Diamonds with unusual or intense coloration are sometimes labeled "fancy" by the diamond industry.
		A clean diamond is more brilliant and fiery than the same diamond when it is "dirty." Dirt or grease on the top of a diamond reduces its luster.
	www.dellsfinejewelry.com /diamondinformation (3977 words)

	USGS Minerals Information: Diamonds, Industrial
		Diamond may well be the world's most versatile engineering material as well as its most famous gemstone.
		The superiority of diamond in so many diverse industrial applications is attributable to a unique combination of properties that cannot be matched by any other material.
		For example, diamond is the strongest and hardest known material and has the highest thermal conductivity of any material at room temperature.
	minerals.usgs.gov /minerals/pubs/commodity/diamond (193 words)

	Diamond jewelry,wedding ring, engagement rings, jewelry diamonds, gold band - Diamond - Material Properties
		The tetrahedral arrangement of atoms in a diamond crystal is the source of many of diamond's properties; graphite, another allotrope of carbon, has a rhombohedral crystal structure and as a result shows dramatically different physical characteristics — contrary to diamond, graphite is a very soft, dark grey opaque mineral.
		The diamond crystal bond structure gives the gem its hardness and differentiates it from graphite.Hardness: Diamond is the hardest known naturally occurring material, scoring 10 on the relative Mohs scale of mineral hardness and having an absolute hardness value of between 167 and 231 gigapascals in various tests.
		Thermal properties: Unlike most electrical insulators, diamond is a good conductor of heat because of the strong covalent bonding within the crystal.
	www.philipnoel.com /showpages.asp?pid=1024 (1070 words)

	Materials Today
		Table, forming many allotropes from diamond and graphite to nanotubes and fullerenes.
		The properties of diamond-like carbon films can be tuned for a variety of applications, from hard disk drives to plastic beer bottles.
		Materials technology can enhance sporting performance, audience enjoyment, and increase athletes’ safety.
	www.materialstoday.com (222 words)

	Diamond cut - Wikipedia, the free encyclopedia
		A diamond that has the top facet or "table facet" exactly perpendicular to the bottom of the diamond or "pavillion" and has it's other facets precisely aligned with excellant symmetry, may show patterns that look like arrows from the top and hearts from the bottom.
		Although the hearts and arrows property is indicative of an top-tier cut, it does not always mean the diamond will be the most brilliant.
		This is because some certificates will not show the important measurements influencing cut (such as the pavilion angle and crown angle) and will not provide a subjective ranking of how good the cut was.
	en.wikipedia.org /wiki/Diamond_cut (4940 words)

	New Diamond Nanotube Composite Material Created
		Argonne researchers have combined the world's hardest known material – diamond – with the world's strongest structural form – carbon nanotubes.
		Sep 18, 2006 - Materials scientists tame tricky carbon nanotubes
		Aug 22, 2006 - Canadian diamonds found to be oldest on Earth
	www.physorg.com /news7424.html (578 words)

	MangledTout.com - Home
		Articles on this page have been input just for test reasons.
		Diamonds can occur in nearly any color, though yellow and brown are by far the most common.
		"Black" diamonds are not truly fl, but rather contain numerous dark inclusions that give the gems their dark appearance.
	www.mangledtout.com (80 words)

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