uncut diamonds softened up during grinding

The diamond is the hardest material in the world. But why does the crystal of carbon grind nonetheless valuable gems? Quantum physicists have now found out a surprising answer: the carbon atoms are "liquid".

A team of German researchers has discovered why diamonds - can grind at all - after all, the hardest material in the world: When polishing its surface is soft, so to speak. It is formed between the stone and the diamond chips of the grinding wheel, a layer in which the individual carbon atoms are much less tightly bound together than in the crystal itself, this layer can then either be mechanically using the disk or removed chemically by the action of atmospheric oxygen . "The moment in which the diamond is cut, the diamond is not a diamond more," Michael Moser brings the Fraunhofer Institute for Mechanics of Materials in Freiburg, the results of the study to the point.

Russian diamonds will bring billions

Russia is the IPO of the state diamond company Alrosa before you want to bring to 1.7 billion euros.
EPA

The Russian state diamond company Alrosa could take a media report, a public offering of up to 2.3 billion dollars (1.7 billion euros). Alrosa wants next year 20 to 25 percent of its shares into circulation, reported business daily Vedomosti said on Monday, citing unspecified parties. JP Morgan has estimated the value of the company at 7.3 to 9 billion dollars.

With the proceeds from the IPO should be the reduction of the gem should be encouraged. In September, Alrosa had announced that it expects the current year with revenues of 3.34 billion dollars. Alrosa shares about a quarter of the world's uncut diamond trading.

Small diamonds manual

Diamonds were the four C's of diamonds as a classification and should mark their quality: Clarity, Color, Cut and Carat. Over time, however, has been joined yet another C and that's a good thing. "Confidence" certified diamonds, are financed with the proceeds not of conflicts, they apply so as a so-called blood diamonds.

Clarity refers to the purity of the diamond. In the majority of diamonds come with a magnifying glass for the specialist very small, natural features to be seen. These margins prevent the light can penetrate freely the stone. The smaller and has less of a diamond margins, the more valuable and pure, he is also known. Is categorized in the following way

to detect at 10x magnification:

Flawless - if
Very, very small features - vvsi
Very small features - vsi
Small features - si

visible to the naked eye:

Significant features - p1
Major features - p2
Coarse features - p3

Under the paint color of the diamond is classified. The more colorless the more valuable! This is divided by the English name of the subdivision or to GIA standards. The colorless, blue and white diamonds are denoted by river and take the letters D and E. They are followed by fine white (Top Wesselton) with the letters F and G, white (Wesselton) called H and slightly tinted white (Top Crystal) with the letters I and J. Then the follow up to the tinted shades (yellow) diamonds with the letter Z.

The cut makes the diamond until his incredible charisma. The ideal cut is the brilliant-cut, because he only brings optimum brilliance and color splitting, so the polished finish and polished diamonds can rekindle his true fire. Fundamental importance of both the number of facets (56 facets is brilliant), and their distribution on the top and bottom of the stone, and their symmetrical arrangement in size and its angle to the Rundistenebene. In short, it must all vote and requires a high degree of skill, so that a diamond is given the perfect finish.

Carat refers to the weight of an uncut diamond. A Carat is equal to 0.2 grams A Carat is in turn divided into 100 points. A diamond with 50 points thus has 0.5 carat weighs 0.1 grams and

As mentioned initially called Confidence the origin of the diamond. This certification only carry diamonds that were mined by the criteria of the international Kimberley Agreement and will not provide funding for weapons and wars.

uncut diamonds brokers

Anyone that has any kinds of diamonds for sale should make contact at diamond brokers. There will be interest into cut, rough, uncut and even jewelery diamonds.

A beautiful look at the world's most alluring gem.
With images as fabulous as their highly prized subject, Diamonds is about the science and glamour of this magnificent gemstone.
The book takes a look at why we desire diamonds, where their characteristic fire comes from and why they are seen as the ultimate symbol of love. Known in pop culture today as bling, diamonds play a role in fashion and celebrity as well as jewelry. Also revealed are some of the amazing properties of diamonds that make it a vital material for modern technology and medicine as well as a "girl's best friend".

diamond mining equipment

We would be interested into more offers of diamond mining equipment. If you goth anything to do with mining equipment like crushers, excavators, dump tracks and equipment for analysis, please make contact for us. We will continue to gather information on the subject.

Kimberlites: Mineralogy, Geochemistry, and Petrology

Kimberlite is the geological formation holding diamonds. This book Kimberlites: Mineralogy, Geochemistry, and Petrology is about the mineralogy, geochemistry and petrology of kimberlites. This is all that the prospecting geologist needs to know, when engaging into diamond mining. The Blue Hope Diamond


The "Hope Diamond" is a dark steel blue diamond weighing 45.52 ct. and was in the Kollur mine in Golconda, India found. The rough diamond weighing 112 ct. At present, this diamond is in the Smithsonian Institution. (See also Blue Diamonds)

uncut diamond evaluation book

The Valuation and Investment Merits of Diamonds is the first book that deals with the economics of diamonds, specifically with the determinants of diamond prices. The period of 1978-1983 was chosen in order to shed light on the dramatic drop in diamond prices. Khoury clearly identifies these determinants, distinguishing them from one another by the level of impact they have on diamond prices. This book includes: a quick review of the characteristics of cut and uncut diamonds, the financial performance of DeBeers in a declining market, the economic structure of the diamond industry, the method for

large uncut diamond sold by Petra

LONDON (Reuters) – Petra Diamonds sold a 507-carat uncut diamond for $35.3 million on Friday, breaking a record as the highest price ever paid for an uncut diamond.


 Analysts had estimated the value of the stone, one of the 20 biggest high-quality uncut diamonds, at around $25 million.

 "It is fitting that the Cullinan Heritage should achieve a sale price of $35.3 million, the highest sale price on record ever achieved for a uncut diamond, as it has the potential to produce one of the world's most important polished gems," Chief Executive Johan Dippenaar said.
London-listed Petra said in a statement the gem was purchased in a tender by Chow Tai Fook Jewelry Co Ltd in Hong Kong.

uncut diamonds, internal and external features Nizam Peters (Illustrator, Photographer, Editor)

We are looking for a good book review on Rough Diamonds, Internal and External Features by Nizam Peters, who was the Illustrator, Photographer, Editor of this book. 

If you have written this book and feel competent and willing to write a review, please let us know.

Clean Diamond Trade Act

Has anyone written a good review of the following text?

Clean Diamond Trade Act