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Diamonds: Crystals of pure carbon. Legendary for being the hardest known material, and prized as the ultimate jewellery treasure. Diamond is a gem of beauty which shatters light into brilliant colours, but is also seen on the active tip of industrial cutting machines for cutting through that which is not easily cut!
Diamond is made of the same atoms as soot, pencil-lead, and the carbon which organic life is based on. Alchemists dreamed of turning base metals into gold, but had the problem that these were fundamentally different atomically. Oddly, base carbon and priceless diamond are the same atomically, so they'd have been in with a better chance! See How to make diamond
As well as being very hard, diamond is a good conductor of heat, and also has a high refractive index (2.4). The carbon atoms in diamond are arranged in a tight tetrahedral crystal matrix which is very strong, but transparent to light.
Also see Platinum-Diamond connection
Plus, here are a few international DIAMOND contact...
Antwerp World Diamond Centre
Leo Diamond at Ernest Jones
Sea Of Diamonds
My Jewelry Box
Endless Diamond Embrace
Exporter and manufacturer of Diamonds with specialization in Diamond cutting, Polishing of branded Diamonds like Princess, Emerald, Square Emerald, Square Radiant, Sightholder, etc.
"DiamondSphinx.com offers certified loose diamonds directly from our own production in 30% and more below wholesale prices".
The Nature of Diamonds - was www.amnh.org/exhibitions/diamonds/
Hatton Garden Online
Diamond Lounge - actually it's luxury online dating
MK (industrial) Diamond
Wholesale Diamonds Inc. - was http://www.diamonds-diamond.net
Diamond Jewellery UK
Dazzling Diamond at TFK - was http://www.timeforkids.com/TFK/magazines/story/0,6277,92338,00.html
A Diamond is Forever.com
A flawless diamond is known as a paragon
More to be added? e-mail
Also see Swarovski Crystal, which isn't diamond, but is quite attractive.