Eight Hearts Diamond
The Ultimate Diamond
Diamond Facts
Williamson mwadui-one of the largest diamond mine from Tanzania
Diamond mines from Arkansas:Nashville news1906 USA although the mine are with very little quantity of rough diamond
Rough diamond- Macle Twinned Credit: iRocks.com
The famous Cullinan Diamond I South Africa Premier mine (from the town of Cullinan) weighted 530.2ct 58.9*45.4* 27.7mm with 76 facet
5ct Vivid Pink Dec 2009 Auction for HK$83,540,000 Est 5-7 million USD
The Koh-i-Noor (the "Mountain of Light") is a diamond that was originally 793 carats when uncut. Once the largest known diamond, it is now a 105.6 metric carats diamond, weighing 21.6 grammes in its most recent cut state
The diamond is currently set into the Crown of Queen Elizabeth and is on display at the Tower of London.


Diamond may be up to 3
.3 billion years old. They are created when carbon is put under immense pressure and temperature deep within the earth distances of 250 miles or even greater

From deep in the earth these deposits were carried to the surface in molten rock, known as magma


Secondary deposits, also referred to as alluvial, were formed as a result of erosion of material from primary deposits and contain diamonds that have traveled some distance from their original source


Early findings


The earlier stages of diamond trade remain somewhat of a mystery. The first diamond was said to be found in India.  As early as 4th century B.C. diamond trade was happening in India.  Until the 18th century, India remained the only producer of diamond.

Diamond mine from Russia Udachnaya Pipe
South africa Cullinan premier mine top view

Diamond producing countries 


Botswana continues to be the largest diamond producing country in terms of value and number two in terms of carats.


Australia ranks number four in the number of carats mined, but ranks ninth in terms of value mined.

South Africa remains one of De Beer's dominant areas. Mines owned by De Beers produce 97 % of the 15.2 million carats.  


Although Botswana produces more than South Africa, the four operating mines are owned by Debswana, a 50/50 joint venture between De Beers and the Botswana government.

The Russian State company Alrosa produced US $3.4 Billion worth of diamonds in 2005 and owns all of Russia's mines. This places Russia second in terms of value.

Canada is a recent entrant into the club of diamond producing nations and has redefined the organization, stepping almost immediately into the number 3 spot in terms of value. With the mines in Russia and the Argyle mine in Australia reaching their productive limits, many in the international diamond community are looking to Canada to keep the global supply steady.

Global Diamond Demand

In 1983, worldwide diamond Jewelry sales were $20 billion, today that figure is over $70 billion. Demand for diamonds globally continues to outpace the available supply. In the US, retail sales of diamond jewelry grew by 7 % in 2004 to $33.7 billion. That is an increase of $2.2 billion over 2004 sales, a sum equal to roughly 50 % of the countries annual engagement ring sales. This is the tenth consecutive year of growth in retail diamond sales. Fueled by strong sales in China, India and the Middle East, global diamond sales grew almost 10 % to $70 billion in 2005. In fact, Dubai's rough diamond trade increased 46 % in 2005 to $3.7 billion, according to the Dubai Diamodn Exchange.

In China, where rough diamond sales were $1.32 billion in 2005, experts predict the market will grow by at least 15-20 % per year. Jewelry sales are expected to rise by over 40 % in the next five years, with the most significant sales for diamond jewelry. China's gold, platinum and diamond jewelry sales reached $17.5 billion in 2005, a 15 % increase. Shanghai is expected to become a sizable trading center in the world's diamond processing and trading field in the next decade. By then, in Shanghai alone sales revenue of diamonds and jewelry will come to US $3 billion- $5 billion, and the number of people engaged in the industry will rise to 100,000.

Because of the growing demand for diamonds and the limited supply, experts and retailers claim that wholesale prices are already up by a third since 2003 and De Beers raised twice at their diamond tenders in 2005 for a total increase of 9.5 %.

History of the leading diamond cutting center

, located on the Scheldt river in Belgium, has been the on-again, off-again center of diamond trade for over 500 years. The history of diamond cutting in Antwerp dates back to the early 1500s, but when the Spanish took control of the city in 1585, most of Antwerp's Jewish diamond cutters fled to Amsterdam, halting diamond production.
 Today, Antwerp remains a global powerhouse in the diamond trade. With the thriving diamond Bourses containing some 1500 diamantairs, almost 85% of the world's rough diamonds, and about half of the polished diamonds (est. $16 billion US), pass through Antwerp every year. There are approximately 4,000 people working in Antwerp's diamond-cutting industry.
Cullinan rough Diamond largest gem quality ever found 530.2ct
Another rough diamond, the vivid Petra Blue diamond 29.62ct from the famous mine of Cullinan was auctioned off at 25,555,555 USD....one of the highest in its category in Feb 2014

Special Twinned crystal, indeed special but not necessarily worth more for a rough diamond.  

Rough enough for you?