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To combat this, several organisations and associations and respected jewellers have emerged over the years, doing research, certifying and building a trustworthy reputation.
Despite these actions, it is still common that diamonds are appraised incorrectly. It is hard to tell the difference between an artificial and natural diamond, and a certificate on paper or as a PDF can be forged relatively easily.
But it is the certificate that customers, jewellers, pawnbrokers and insurers rely on. This is where the Diamond Verification Association sees room for much needed improvements.
As it happens, every diamond has its own unique markings and characteristics, often only viewable with a microscope. These details can not be copied or manufactured, so they can function as the perfect foundation of a certification system.
Often they feature descriptions of unique markings that show on the diamond. As this certificate is such a large component of the value of the diamond, it is a very likely target for fraud.
They are incredibly consistent and provide the greatest peace of mind when purchasing any diamond. GIA has no financial stake in the sale of the diamond and evaluates diamonds on a variety of qualities and elements, including:.
GIA has a reputation for rating rated Color and Clarity, the most subjective scales, more rigorously. We have also recently developed Ringo, a patented artificial intelligence model, that can examine videos of diamonds and determine if they are eye-clean.
Now that the GIA has entered the cut grade game, though, their share in this market has dropped significantly. AGS is still the go-to choice for many retailers selling perfectly cut round diamonds.
If there is a diamond that is somewhere in between grades, a manufacturer or retailer may send the diamond to multiple laboratories looking for the better grade.
Its far more likely that the grades will be the same, but its possible they will get the upgrade which more than makes up for the cost of sending it to AGS for certification.
But AGS is not as commonly used for non-round diamonds. So if a retailer has 50 cushion cut diamonds, 49 of which are GIA certified and one AGS diamond, that diamond is likely to have received an upgrade.
This is not a knock on AGS, merely an observation of how some wholesalers and retailers may try to take advantage of the end consumer.
All in all, AGS is a very reliable laboratory. If you have more questions about the reliability of an AGS certified diamond, contact us.
They were the most popular gem lab for major jewelry chains in the United States and Canada, like Kay, Zales and others.
IGI is like a factory: they work fast, and their prices are much better than those of GIA—which appeals to diamonds sellers but not necessarily the end consumer.
While IGI bills itself as a top-of-the-line laboratory, this is unfortunately not the case. From extensive experience in the diamond industry, we have continually seen that their grading is lax and less consistent than the standard bearers in the industry, like GIA.
Even the largest jewelry insurance underwriter writes:. These are the most respected labs, known for their accuracy and professionalism. These reports are not appraisals and do not carry valuations.
Certificates from any other sources are often questionable and should not be relied upon by insurers. In addition, purchase diamonds from reputable vendors that sell diamonds certified by these labs—such as Blue Nile and Brian Gavin Diamonds.
We also recommend purchasing diamonds from James Allen. They do sell IGI certified diamonds, but we steer customers away from purchasing those particular stones.
Buying a diamond with an independent certificate should give you peace of mind, knowing your diamond is equivalent to the quality and value that is claimed.
With our years of expertise, we do not believe IGI certificates provide this assurance. Because these two categories are the most subjective, we knew they would tell us a lot about how IGI grades diamonds.
In reality, the price is highly inflated for an inferior product. We unfortunately have seen many customers purchase an EGL certified diamond thinking they found a great deal, only to realize they fell for a selling trick.
We wish they had hit the contact us button sooner, so we could assist them in making a well-informed purchase. As an example of one of these selling tricks, we found an EGL certified 1.
At first, it seems like an incredible deal. Searching for a GIA certified diamond two or three Color grades lower or one or two Clarity grades lower will ensure you purchase a higher quality diamond for a cheaper price.
Any EGL certified stone in the market is, by definition, more expensive than its identical self as certified by the GIA.