How do you know if the diamond is fake or real?

False and unpredictable diamonds increase the distrust of the sector from time to time. Diamond sales are falling for this reason. New technologies such as laser engraving or chain hoists are becoming more and more wonderable enough to convince more and more skeptical buyers that diamonds are not fakes.

He reached a “suspicious diamond” in a lab in Carlsbad, USA. There was a very small mark on the outermost layer of jewelers, which he called the kemer belt:: the security code for genuine diamonds was engraved on this stone in 2015.

However, the font was different from the font used by the American Gemstone Institute (GIA). Original diamonds are natural, but these diamonds were made in a laboratory.

Christopher Breeding and Troy Ardon of the Carlsbad Laboratory say, “They have seen very few forgeries that are as clear as here.” Carlsbad is the city where the GIA is headquartered. GIA certifies that non-profit-making diamonds are authentic by performing quality control. Each diamond gives a number, which is laser-engraved. At this point, the problem of trust can arise …


Yes it can be processed. With the laser, the original codes can be written as thin as one in 50 of the hair strand. “This mark is very easy to erase,” says Andrew Rimmer, senior executive at Opsydia, working on “laser marking for security and authenticity”, founded by Oxford University.

Instead, Rimmer is working on lasers that can code a security code under the outer surface of the diamond. Codes processed into diamonds can be permanent forever. There’s a lot of money in the diamond market. According to the Boston consulting firm Bain & Company, 133 carats, ie 27 tons, of diamonds worth about $ 15 billion are extracted each year.

Almost half of this comes from Africa. In some countries on the continent such as South Africa and Botswana, mining is subject to strict rules. However, in Zimbabwe, during the time of former President Mugabe, diamond imports were used to generate revenue for the oppressive secret police. Last year, three Russian journalists investigating the Kremlin’s links to militias who continued to fight revenue from diamond sales in the Central African Republic were killed.

In addition to irregularities in the extraction of genuine diamonds, artificial diamonds are one of the industry’s problems. China’s major Internet sales center Alibaba’s website, artificial diamonds, “real diamonds” with documents claiming to be offered for sale. Confidence declined following such sales in the market, and diamond sales fell dramatically in 2019.


In order to regain confidence and increase sales, some companies in the diamond business have begun to use the “chain hoist” method. The entire history is processed from the moment it is extracted from the mine to the jeweler, if it is not resistant to abuse and with diamonds embroidered on various parts of the diamond. For example, Tracr, founded by Everledger and De Beers in Australia, uses this method to prove the authenticity of diamonds. Alrosa, one of the giants of Russian diamond mining, announced that it will join the Tracr platform last fall. Eugeniya Kozenko of Alrosa says that thanks to this participation, “they can explain to customers the entire history of the diamond until the point is removed and processed”.

We can develop many other applications on this path, Jim says Jim Duffy, senior manager of the Tracr platform, which embarks on the history of the diamond and serves to prove its accuracy. According to Duffy, the most difficult part in developing this application was to produce robots that would scan every single point of the diamond. Algorithms developed by machines to automatically recognize diamonds were also difficult.

Michillay Brown, an expert in managing Tracr’s relationship with partners, reports that De Beers’ GemFair program also records diamonds from small-scale African miners. The program began with small-scale diamond artisans working in Sierra Leone, West Africa. Thus, the miners of Sierra Leonela recorded GPS data that identifies the location of each diamond they extracted and processed it into QR codes on pouches where diamonds were placed, resistant to adverse conditions.

Canadian mining company Lucara Diamond also bought a system called Clara last year. John Armstrong, Lucara Diamond’s deputy director of technical affairs, explained how they benefited from the system, saying, “The diamonds they receive are processed as soon as they are removed from the mine.” According to Rimmer, “Uploading all the information about the diamond’s source into the chain hoist is the most reliable way to store detailed information.” However, it is necessary to prove that the diamond that this information is written is really that diamond.


It’s hard to answer. Because of the nature of the diamond, the light coming from the outside is largely broken. So no matter where you hold the laser, it can break inside and spread out in other directions. This means that the code cannot be processed properly.

Oxford University engineers conducted a study on how the telescopes can be clearly visualized and minimized fluctuations in the atmosphere. The results of this study, incidentally, also gave answers to the success rate of laser beams processed into very small objects.

Marking a point of one thousandth of a millimeter can only be done at a speed of 0.15 millimeters deep to the surface of the diamond, one trillionth of a second. To prevent the laser beam from burning the stone, it is necessary to perform the operation at this speed.

Signs of this size are too small for jewelers to see with magnifiers. It can only be seen with a powerful microscope. And because they’re so small, it doesn’t have to be outside the diamond belt that closes when the jewel is processed. It can also be near the outermost surface or at the peak, so that it can be viewed with a microscope when necessary.

Opsydia sold its first machines to De Beers. However, as soon as you start writing in diamonds, you can also write electrical circuits. According to Rimmer, this could “lead the diamond to become a scientific instrument and ultimately to a point where quantum calculations can be made.”


Confidence in the authenticity of the diamond and its source is critical to increasing sales. Ajay Anand, founder of the Rare Carat diamond jewelery company in New York, has created a platform that brings together all the information about the diamonds in small or large scale shops.

According to Anand, there are 30 or 40 variables for each diamond:

Thanks to this platform, we have probably created the largest data group available. Our algorithms are used to estimate the value of a diamond almost one hundred percent accurately. This platform provides customers with information on whether the diamond they want to buy is worth the sale price. This enables customers to evaluate with reliable information.

We have thus strengthened many small-scale Internet vendors and retailers that are trying to attract customers for a lower amount of money, An says Anand. Diamond and diamond sector employees, with all these new marking, tracking and purchasing systems, the diamond will never lose its grandeur.

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