History of Diamonds - Belgium

Thursday, 27 August 2009 12:48 by Roe Kalb

Following last week's post on the diamond blog about the history of diamonds in India, here is the second part of my review of the history of diamonds: this time – Belgium!

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Antwerp Diamond Bourse

Belgium, and more precisely Antwerp, has been the world's center of diamond trade for the past 500 years or so. There are four diamond bourses operating in the city, one for bort and three for gem quality goods. Throughout the years it lost its dominance at times only to regain power later on.

Diamond cutting in Antwerp started in the 16th century, when masses of Jewish people who were expelled from Spain and Portugal settled in Belgium, bringing with them the knowledge of diamond trading. Antwerp was growing as a city and soon became the commercial heart of Europe, with 40% of the world's trade passing through its massive port.

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By the end of the 17th century, internal conflicts between the guild of diamond cutters and rich merchants in Belgium led Antwerp to lose its status as a world diamond center, and the focus shifted to Amsterdam. In the 18th century, Amsterdam gained control over the world's diamonds supply, and preferred to keep the best stones for its own diamond cutters, leaving Antwerp with low-quality diamonds. This, however, led Antwerp diamond cutters to develop new methods of turning low-quality rough diamonds into fine polished gemstones.

In 1871, a new source of diamonds was discovered at the Kimberley diamond fields in South Africa, which led to the resurrection of the diamond industry in Belgium. Mass quantities of rough diamonds were transported to Europe, and diamond cutters in Antwerp once again had their hands fulls. The discovery of the Kimberley diamond fields in South Africa also sparked the birth of De Beers, which would eventually become an international diamond giant.

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Things were looking bright until the Great Depression of the 1930s. The demand for diamonds and luxury goods in general plummeted, and the diamond industries in Belgium and the Netherlands were forced to limit their diamond production by 50% in order to avoid overcapacity.

During World War II, despite the noble attempts by the Belgian government and the Belgian people to protect Jews in Belgium from the Nazi invasion, the Belgian resistance was eventually defeated and many Belgian Jews were sent to concentration camps. Those who managed to escape immigrated to the United States, England, Portugal and Israel and some of them started new diamond operations in those countries.

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City of Diamonds

After the war, Antwerp took some time to recuperate and rebuild its diamond industry. The Correspondence Office for the Diamond Industry was formed in order to return hidden diamonds to their rightful owners. From that moment on and until the 1970s, the Antwerp diamond industry was dominated by the large Hasidic Jewish communities that remained in Belgium. However, in the past two decades, Indian and Armenian diamond traders have gained a foothold in the Antwerp World Diamond Center.

Today, Antwerp supplies nearly 85% of the world's rough diamonds, with a $16 billion turnover from polished diamonds every year. More then 4,000 people are employed in the Antwerp diamond cutting industry.

Photo Credit: Redvers & Nils Geylen

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India's History of Diamonds

Friday, 21 August 2009 09:44 by Roe Kalb
For my next few posts, I've decided to tell you a bit about the history of diamonds and the role that they've played in different cultures over the course of history. Like with everything else, it is customary to begin at the beginning. And in the case of diamonds, the beginning is believed to be India.

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India is the world's largest diamond polishing industry, a development that has only started recently. But apparently, the relationship India has with diamonds is much deeper and older. The first diamonds, it is said, were discovered and mined along the rivers Penner, Krishna and Godavari in India. Great alluvial deposits were discovered in India, containing a precious gem the Indians call Vajra, which transliterates from Sanskrit to “thunderbolt”. Diamonds were revered in India for their beauty as well as their great abilities to heal, provide protection in battle and keep evil spirits away.
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Business City of Mumbai 
In 327 BC, Alexander the Great invaded India, in his quest to conquer the entire known world, which the Greeks believed ended in India. Although he was eventually forced to withdraw from his campaign, he managed to bring some diamonds back with him to Europe. Around that time, India started diamond trade, exporting it to Babylon, Mesopotamia, Egypt and Arabian countries and even Israel

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India is home to some of the world's most famous historical diamonds. The Koh-i-Noor Diamond, which was once considered the largest diamond the world, was the possession of many Sikh, Perisan and Mughal rulers, who waged war against each other in the diamond's name. Koh-i-Noor eventually became part of the British crown jewels. More notable Indian diamonds include the Orlov, the Regent Diamond, and the Hope Diamond – which was stolen from an eye of a sculpted idol of the Hindu goddess Sita, wife of Rama, and is believed to be cursed.

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After a long period of complete dominance over the global diamond industry, new diamond deposits were discovered in Russia, Brazil, Australia and Africa, while the commercial potential of the Indian diamond deposits had been exhausted by the late 18th century.

Today, India is home to the world's leading diamond cutting and polishing center, providing 11 out of every 12 processed diamonds in the jewelry around the world. The diamond sector in India employs 1.3 million people. Although once the Indians initiated the taboo against diamond cutting, today India leads in the field of cutting and polishing diamonds. 

Tune in next week when we review Belgium and its diamond history!
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The Mad Scientist Meets Fifth Avenue; How to Make Diamonds in the Microwave

Thursday, 30 April 2009 12:34 by Roe Kalb
Who hasn't wished they could find a way to make diamonds from scratch, and in the process, bypass millions of years of geology and costly exploration, mining, and distribution?
   
 
Growing demand for diamonds for use in industry as well as in gemology has driven the diamond industry to look for ways to manufacture the precious stones in a controlled environment, without the costly process of mining. 
Synthetic diamonds have been manufactured by various industrial processes for more than half a century. However, in recent years it has become possible to produce gem-quality synthetic diamonds of significant size using sophisticated technology and even everyday household appliances.
 
This is an excerpt from an Internet website describing how to make you’re your very own homemade diamonds in the microwave. Joe Champion, who is credited with this recipe, and I, advise you to take special precautions with this experiment and conduct it only in extremely well ventilated area or outdoors.
     
STEP 1
     
Using a Pyrex microwave cooking dish with lid, place two charcoal briquettes covered with 4 ounces of peanut butter inside. Microwave on "high" for 60 minutes at 10 minute intervals.
   
STEP 2
   
When cool enough to handle, place the dish on top of an unlit barbeque grill. Remove the lid form the dish and saturate the charcoal and residue with charcoal lighter fluid. Light the charcoal (Note: At this time the diamonds are made, this procedure is reducing the excess carbon to ash.)
   
STEP 3
At this time you should have a dish full of a gray/black soot. Carefully scrape this soot into a dark colored dish and gently wash. The ash will wash away leaving the diamonds you've produced.

   
     
So how can you tell if your diamond is real? 
   
The DiamondNite - a new diamond and moissanite tester, can tell you within seconds whether your precious gem is a synthetic diamond or real diamond. However, if a synthetic diamond is chemically identical to carbon diamond, there's no real way to tell them apart (which makes them the same, so you shouldn't really sweat it). But do you as professional diamond dealers really use this kind of equipment or is it only for amateurs?  
 
I'm looking forward to hearing from you if this little experiment worked, and how you diamond dealers, polishers and cutters, check that your diamonds are real. Do you do it the old-fashion way or do you use new state-of-the-art technology? Share it with us!
 
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Photo Credit: dottorpeni & jurvetson.

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