Independent laboratories evaluate diamonds and provide certificates to verify their classification. Some laboratories are strict and consistent, while others are flexible and flexible. Some laboratories are strict and consistent, while others are flexible and inconsistent. Above all, it's important to make sure you're paying the right price for the real quality of the diamond.
The institution that Thais rely most on to obtain their certification is the GIA or Gemological Institute of the United States. The GIA has two types of certification, which are a full report or a diamond classification report, which depends on the weight of the diamond. It is used with diamonds weighing more than 1 carat, and the other type, which is a summary report or diamond file from the GIA, which is used with diamonds under 1 carat. Certification of the full report costs more than a summary report.
As a consumer, the rating report is your guarantee that you are receiving exactly what is described on the piece of diamond jewelry. Keep in mind that you should only buy diamonds with reports issued by an independent gemological laboratory, such as the GIA or the AGS. The GSI rated some of the diamonds above the GIA and others below, making it difficult to determine the consistency of a GSI rating. Instead, unethical jewelers rely on the lax rating standards of “independent appraisals” and biased internal reporting to make low-quality diamonds look better on paper.
These include Gemprint, a non-invasive positive identification technology for every diamond used by the FBI and the Canadian Government, along with standardized and independent photographs and videography of diamonds. So, if a retailer has 50 cushion-cut diamonds, 49 of which are GIA certified and one AGS diamond, that diamond has likely received an upgrade. These “cheap” diamonds are usually what they are: low-quality diamonds that are not worth sending to a suitable laboratory for classification. A true independent appraiser is a selfless third party who works on your behalf to clinically evaluate your diamond purchase and report only on your findings.
Diamond certificates (also known as classification reports) are issued by independent laboratories following a strict and secure diamond classification process. They lack the precision and rigor of loose diamond classification reports that report on a single, specific gem. Ringo will also filter to take into account other parameters, such as ensuring that the diamond is well cut, has no fluorescence problems and that it matches the style of setting you choose. A certified diamond has been evaluated by an external laboratory and comes with a certificate, while an uncertified diamond does not.
This report or laboratory certificate will be issued by a rating authority and will describe various elements of the diamond, such as color, clarity, length and width. Smart diamond companies use this knowledge gained by sending thousands of diamonds to different laboratories every month to maximize their results. Color grades start from D to Z and the sophisticated color grading system applies if a diamond shows color intensity higher than the Z color classification.