Hard Crystal Diamond
2008
Diamond Unleashed
A diamond is a sort of transparent crystal of tetrahedrally bonded carbon atoms that crystallizes into the diamond lattice which is a variation of the face centered cubic structure. Diamonds have been adapted for various uses because of the material's exceptional physical characteristics. Best notable are its extreme hardness and thermal conductivity that is around 900–2,320 W•m-1•K-1, wide bandgap and high optical dispersion. Above 1,700 °C in vacuum or oxygen-free atmosphere, diamond converts to graphite; in air, transformation starts at ~700 °C. Diamonds occurring naturally have a density ranging from 3.15–3.53 g/cm3, with pure diamond close to 3.52 g/cm3. In spite of the hardness of diamonds, the chemical bonds that hold the carbon atoms in diamonds together are weaker than those that hold together the other form of pure carbon, graphite. The difference is that in diamonds, the bonds form an inflexible three-dimensional lattice whereas in graphite, the atoms are tightly bonded into sheets, which can slide easily over one another.
Diamond is the hardest natural material, where hardness is termed as resistance to scratching and is graded between 1 (softest) and 10 (hardest) using the Mohs scale of mineral hardness. Its hardness has been known since antiquity.
Hardness of the diamonds depends on its purity, crystalline perfection and orientation: hardness is higher for flawless, pure crystals oriented to the direction. Though it is possible to scratch some diamonds with other materials, such as boron nitride, the hardest diamonds can only be scratched by other diamonds. In particular, nanocrystalline diamond aggregates were measured to be harder than any single large crystal diamond. Those aggregates are generally produced by high-pressure high-temperature treatment of graphite or fullerite.
The hardness factor of diamond contributes to its suitability as a gemstone. Since it can only be scratched using other diamonds, it maintains its polish extremely well. Unlike many other gems, it is well-suited to wear daily because of its resistance to scratching, perhaps contributing to its popularity as the preferred gem in engagement or wedding rings, which are often worn every day.
The hardest natural diamonds originate from the Cope ton and Bingara fields, which is located in the New England area in New South Wales, Australia. These diamonds are usually small, perfect to semi perfect octahedral, and are used to polish other diamonds. Their hardness is associated with the crystal growth form, which is termed as single-stage crystal growth. Most other diamonds show more evidence of multiple growth stages which produce inclusions, flaws, and defect planes in the crystal lattice, all of which affect its hardness. It is possible to treat regular diamonds under a combination of high pressure and high temperature to produce harder diamonds that are used in hardness gauges.
Another factor related to hardness is a kind of mechanical property called toughness, which is a material's ability to resist breakage from forceful impact. The toughness of natural diamond is measured as 2.0 MPa•m1/2, and the critical stress intensity factor is 3.4 MN•m-3/2. Those values are better compared to other gemstones, but poor compared to most engineering materials. As with other material, the macroscopic geometry of a diamond contributes to its resistance to breakage. Diamond has a special cleavage plane and is therefore more fragile in some orientations than others. Diamond cutters use this attribute to cleave some stones before faceting.
About the Author
Overabillion.com is an informative site containing valuable information on http://www.overabillion.com/diamond.html"
title="Precious stones">Precious stones and more.To know more exiting features of diamonds view our site href="http://www.overabillion.com/"
title="Overabillion">Overabillion.
( DIAMOND D'S CRYSTAL MIX ) VARIOUS ARTISTS - freedom ( theme from Panther - rap version ) ( HQ )
 |
 cute pearl S pink bow crystal diamond hard Case Back Cover for iphone 3G 3GS $8.80 Time Remaining: 18d 14h 59m Buy It Now for only: $8.80 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple Iphone 4 4S 4G White $0.99 Time Remaining: 42m |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Hot P $0.89 Time Remaining: 51m |
 Luxury Diamond Crystal Bowknot Hard Case Cover Skin For iPhone 4 4G 4S Pink $6.66 Time Remaining: 19d 3h 45m Buy It Now for only: $6.66 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Blue $0.99 Time Remaining: 1h 16m |
 Crystal Diamond Flower Hard Back Cover Case for Samsung Galaxy S2 S II SII i9100 $5.99 Time Remaining: 19d 17h 50m Buy It Now for only: $5.99 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Hot P $0.89 Time Remaining: 1h 20m |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Pink $0.01 Time Remaining: 1h 20m |
 Snap on Luxury Bling Diamond Crystal Hard Back Case For Apple iPhone 4G 4SWhite $3.99 Time Remaining: 15d 20h 46m Buy It Now for only: $3.99 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4 4S 4G Purpl $0.99 Time Remaining: 1h 28m |
 Pink Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4G 4S 4 $4.49 Time Remaining: 26d 17m Buy It Now for only: $4.49 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4 4S 4G Black $0.01 Time Remaining: 1h 30m |
 Diamond 3D Rose Bling Crystal Hard Back Case for Apple Ipad 2 iPad2 Black P22 $4.99 Time Remaining: 1h 31m |
 For Samsung Brightside U380 Crystal Diamond Bling Hard Case Phone Cover Zebra $9.95 Time Remaining: 10d 14h 9m Buy It Now for only: $9.95 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Red $0.01 Time Remaining: 1h 47m |
 For Samsung Brightside U380 Crystal Diamond BLING Hard Case Phone Cover Pink $9.95 Time Remaining: 10d 14h 8m Buy It Now for only: $9.95 Buy It Now |
 Luxury Hard Protection Back Case Cover Diamond Crystal For Apple iPhone 4G Gift $0.99 Time Remaining: 1h 58m |
 Cute Bowknot Shiny Bling Diamond Hard Case Crystal Cover Skin For iPhone 4 4G 4S $7.99 Time Remaining: 12d 22h 32m Buy It Now for only: $7.99 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4 4S 4G White $0.99 Time Remaining: 2h 3m |
 New Pink Luxury Bling Diamond Crystal Star Hard Case Cover For Samsung i9100 $0.99 Time Remaining: 2h 4m |
 Luxury Bling Diamond Crystal TPU Hard Back Case CoverFor Apple iPhone 4 4S Black $3.99 Time Remaining: 12d 16h 8m Buy It Now for only: $3.99 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Pink $0.01 Time Remaining: 2h 5m |
 For LG Lucid 4G Crystal Diamond BLING Hard Case Snap Phone Cover Gradient Purple $9.95 Time Remaining: 15d 14h 59m Buy It Now for only: $9.95 Buy It Now |
 1PC Luxury Bling Diamond Crystal Hard Back Case Cover Skin For Apple iPhone 4G $0.01 Time Remaining: 2h 5m |
 Diamond Peacock Crystal Plating Hard Cover Case for iPhone 4 4G 4S Black PL4 $0.01 Time Remaining: 2h 7m |
 For LG Lucid 4G Crystal Diamond BLING Hard Case Phone Cover Silver Pink Zebra $9.95 Time Remaining: 15d 14h 58m Buy It Now for only: $9.95 Buy It Now |
 hot Diamond Bow Crystal Hard Back Case For Apple iPhone 4 4G 4S White Clear PC21 $3.49 Time Remaining: 2h 15m |
 For Motorola DROID RAZR Crystal Diamond BLING Hard Case Phone Cover Silver $9.95 Time Remaining: 25d 13h 54m Buy It Now for only: $9.95 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Black $0.99 Time Remaining: 2h 32m |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4 4S 4G red $0.99 Time Remaining: 2h 38m |
 Luxury Cute 3D bling crystal diamond pearl hard case cover skin for iPhone 4G 4S $8.99 Time Remaining: 14d 6h 2m Buy It Now for only: $8.99 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4 4S 4G Purpl $0.01 Time Remaining: 2h 40m |
 Purple Silver Crystal Diamond BLING Hard Case Phone Cover for Motorola Electrify $9.95 Time Remaining: 10d 22h 43m Buy It Now for only: $9.95 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4 4S 4G White $0.99 Time Remaining: 2h 40m |
 Handmade Bling Diamond Crystal iPhone 4 4G 4S Hard PINK Case Cover Pink Flowers $16.98 Time Remaining: 13d 19h 31m Buy It Now for only: $16.98 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Hot P $0.89 Time Remaining: 2h 40m |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4 4S 4G Blue $0.01 Time Remaining: 2h 41m |
 iPhone 4 G 4Gs 4S Camellia Shiny Crystal Diamond Rainstone Hard Case Cover Skin $9.99 Time Remaining: 22h 53m Buy It Now for only: $9.99 Buy It Now |
 Luxury Crystal Bling Diamond Hard Case Cover Shell For Apple iPhone 4 4G 4S SL $0.01 Time Remaining: 2h 46m |
 Black Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4G 4S 4 $4.49 Time Remaining: 25d 16h 26m Buy It Now for only: $4.49 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Pink $0.01 Time Remaining: 2h 51m |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4 4S 4G Purpl $0.99 Time Remaining: 2h 53m |
 Diamond Luxury Bling Camellia Crystal Hard Cover Case For Iphone 4 4S 4G Pink $6.69 Time Remaining: 20d 15h 6m Buy It Now for only: $6.69 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Blue $0.99 Time Remaining: 3h 2m |
 DIAMOND CRYSTAL Bling Rhinestone Black Hard Case Cover For iPhone 4 4S $4.99 Time Remaining: 17d 1h 27m Buy It Now for only: $4.99 Buy It Now |
 Luxury Bling Diamond Crystal Hard Back Case Cover For Apple iPhone 4S 4 4G Red $0.01 Time Remaining: 3h 6m |
 Black Luxury Bling Diamond Crystal Star Hard Case Cover For Samsung i9100 Galaxy $0.99 Time Remaining: 3h 7m |
 For LG Rumor Reflex Crystal Diamond BLING Hard Case Phone Cover Purple Silver $9.95 Time Remaining: 1d 11h 14m Buy It Now for only: $9.95 Buy It Now |
 White Luxury Bling Diamond Crystal Star Hard Case Cover For Samsung i9100 $0.99 Time Remaining: 3h 12m |
 New Bling Crystal Diamond Peacock Hard Back Case Cover For Apple iPhone 4 4S 4G $16.99 Time Remaining: 20d 12h 29m Buy It Now for only: $16.99 Buy It Now |
 Diamond Crystal Bling Zebra Hard Back Cover Case For Apple iPad1 iPad 1 st Black $0.01 Time Remaining: 3h 24m |
 Premium Bling Luxurious Design Diamond Crystal Snap-on Case for Apple iPod Touch 4, 4G, 4th Generation, 4th Gen - Silver List Price: Sale Price: $4.47 You save: $35.52 (89%)  Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionSpecial rhinestones diamond case for ipod touch 4G give your phone a makeover with a luxurious look  |
 iPod Touch 4 Bling Crystal Diamond Bubble Design Protector Case Sale Price: $6.16 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionProtect and personalize your wireless device with this bling crystal diamond case. Sparkling rhinestones embedded around makes your phone more luxurious and glaring. This accessory can also provide protection by preventing scratches and chips... |
 Special Totally Purple and White Flower Glitter Rhinestone Jewel Two Piece Diamond Crystal Case Hard Cover for iTouch 4 Snap on Case for Apple iPod Touch 4th generation (16gb , 32gb) + Live * Laugh * Love Vangoddy Wrist Band!!! Sale Price: $11.79 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThis case boasts a simple snap together design that makes getting your iPod into a good looking protection plan easy! The case is precisely molded with cutouts for the camera, volume rocker, speaker (which is near the dock/charging port), sleep/power off button, and dock/charger port... |
 Rhinestones Protector Case for HTC EVO 4G, Cloud Hearts Full Diamond Sale Price: $8.99 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionProtect and personalize your HTC EVO 4G with this front and back Protector Case that entired covered with rhinestones. |
 MOTOROLA ANDROID DROID X MB810 HOT PINK SOLID FULL DIAMOND CRYSTAL HARD CASE COVER Sale Price: $7.00 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product |
 Magenta Hot Pink Premium Crystal 2 Piece Case for iPhone 3G / 3G S (Compatible for all 3G / 3GS Models!!) Sale Price: $4.99 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThis 2 piece cover is entirely covered in rhinestones. The back cover is a form-fitting cover that protects the glossy back of your iPhone 3G without adding a lot of bulk. Hard plastic protective cover snaps on over the back of the iPhone... |
 Black Neoprene Armband for Apple iPod Touch 4 ( 4g , 16gb , 32 gb ) + Smoke Diamond Crystal TPU Argyle Skin + No- hands iPod Touch 4th Generation Earphones with microphone + VG Brand Live * Laugh * Love Wrist Band!!! List Price: Sale Price: $22.85 You save: $5.00 (18%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionMake Sure Your iTouch is CoveredProtect your brand new Apple iTouch 4 against scratches and damages while exercising with this well designed high-density neoprene armband. The cover itself is made out of Scratch-resistant neoprene that has been woven over multiple times to make it as dense and protective as we possibly could make it... |
 Authentic DKNY Women's Crystal Bezel Silver Black Leather Strap Watch NY4451 List Price: Sale Price: $85.34 You save: $49.66 (37%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionQuartz movement from Japan, Polished gunmetal hands and Roman numerals, Analog display, Polished silver-tone bezel encrusted with crystals, Polished silver-tone stainless steel rectangular case and polished crown, Stainless steel caseback, 30 meters/100 feet water resistant |
 Crystal Clear Sale Price: $0.99 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product |
 Sterling Silver Charm Pendant Virtuous Women Message Spoon Fork Knife 10 Rainbow Crystal "A good woman is hard to find, and worth far more than diamonds. Sale Price: $27.00 Eligible for free shipping!Availability: Usually ships in 4-5 business days See Reviews For This Product DescriptionSterling Silver Charm, Bracelet and or Necklace Sold Separately. Genuine Swarovski Crystal |
Case News
Comment