Showing posts with label diamonds. Show all posts
Showing posts with label diamonds. Show all posts

Thursday, December 2, 2010

Why diamonds can be ground at all
29. November 2010, 17:28 Why can not at all polished diamonds have now scientists from the Fraunhofer Institute for Mechanics of Materials IWM in Freiburg found.
Researchers decipher atomic mechanism of the diamond processing: A "glass-like carbon phase" makes it possible
Freiburg - It is the hardest material in the world, and yet can grind diamond itself. Already 600 years ago were first diamond cut and the precious stones were quick to most expensive jewelry, and later became indispensable industrial tool. Now a team led by Lars Pastewka and Michael Moseler from the Fraunhofer Institute for Mechanics of Materials IWM in Freiburg has revealed the secret of why diamond can work at all.
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The research findings represent a major step in tribology, ie the friction and wear research, which is now understood despite its importance for the industry to its scientific basis is still largely.

For centuries, diamonds are cut by skilled craftsmen in a Cast iron wheel, which is peppered with fine diamond chips and fast, with tip speeds of about 30 meters per second, rotating. At the sound of the grinding wheel and with their proverbial tact recognized by experienced diamond cutter, like they have to keep the diamond in the rough to smooth it and to get a polished surface before they can enter the diamond trade for sale. .

Wednesday, June 23, 2010

platinum diamond earrings

Certified Platinum, Round, Diamond 4-Prong Stud Earrings (1 cttw, G-H Color, VS2 Clarity)These classic diamond stud earrings are a timeless gift. They feature round-cut diamonds with a total carat weight of 1 carat. The diamonds are mounted in a four-prong setting on platinum posts for pierced ears. The posts are threaded, and the rounded backings screw on for a comfortable and secure fit.
These are exceptional quality diamonds. With a minimum G-H color rating, they are in the upper-most range of near-colorless and appear dazzling white to the eye. They have a minimum clarity of VS2, meaning there are very small

Wednesday, September 17, 2008

diamond buyers

If you have uncut, rough diamonds for sale, please make contact at diamond buyers.

Tuesday, September 16, 2008

rough diamonds wanted

Rough diamonds are wanted by international buyers. If you have uncut, rough diamonds for sale, pleas contact rough diamonds wanted.

Wednesday, August 6, 2008

diamond brokers

This blog will be about offers and requests of diamonds. If you interested into the diamond trade, please visit diamond brokers.