Each of the four C's (Carat Weight, Cut, Color, Clarity) is accompanied by a diamond chart illustrating the differences between grades. After learning more, if you need to see diamonds in person, visit your local jewelry store. Get a better sense of what you personally value in a diamond. Note the color, cut, and clarity that best fit your needs.

Best Results From Gemological Studies. A gemological institution and systems company (GIS) provides gemstone identification services, diamond grading services, and jewelry quality reports to professionals and the general public. In the Gemological Institute & Systems India (GIS) Laboratory, every test is performed by accomplished gemologists.

In the 1940s, GIA established the "4Cs" and the International Diamond Grading System™ – to this day, the worldwide standard for evaluating diamond quality. Cut. The sparkle and brilliance of a diamond depends more on its cut than anything else. Learn More. Clarity.

The main difference between the IGI and the GIA is the GIA is often the most regarded grading lab in the world, known for rigorous systems for assessing diamonds. The IGI is renowned for reports on lab-grown diamonds but doesn't have the same reputation in grading natural ones. For my wife's engagement ring, I chose a GIA …

"For D-Z diamonds, the basic grading service is about $30 for a quarter-carat diamond to about $85 for a one-carat stone, with the fee increasing based on weight and the service," Barnett says ...

Assessment of color origin and quality based on GIA's color grading system for …

The GIA Diamond Cut Grading System. One of the most significant advancements in the diamond industry during the 1950s was the introduction of the GIA's cut grading system. This system played a pivotal role in standardizing the evaluation of diamonds, aiming for consistent judgment across the industry. While the 4Cs of …

A GIA Diamond Grading Report includes an assessment of the 4Cs – Color, Clarity, Cut and Carat Weight – along with a plotted diagram of its clarity characteristics and a graphic representation of the …

Today, GIA's 4C diamond grading system is the most commonly used and accepted grading diamond grading standard. The key factors of a diamond that the system takes into consideration when assigning grades are color, clarity, cut, polish, and finish. Depending on its quality, a diamond can receive one of five grades after being …

A metric "carat" is defined as 200 milligrams. Each carat is subdivided into 100 'points.'. This allows very precise measurements to the hundredth decimal place. A jeweler may describe the weight of a diamond below one carat by its 'points' alone. For instance, the jeweler may refer to a diamond that weighs 0.25 carats as a ...

Given the discrepancies of the above certification labs, I would suggest using GIA and AGS labs as the standard caliber for grading your diamond. So whenever you go shopping online, always check for the issuer of the grading certificate before you purchase a diamond. Avoiding these labs means buying from the right diamond vendor.

And there would be no way to evaluate and discuss the qualities of an individual diamond. Diamond professionals use the grading system developed by GIA in the 1950s, which established the use of four …

The top several AGS light performance grades may be compared to the highest colors in diamond color grading; where D,E,F are all considered 'colorless' due to their extremely close appearance with each other, AGS 0, AGS 1, AGS 2 are generally considered high performers – at the high end of other cut grading systems.

The GIA Diamond Grading Report contains scientifically determined information on …

In 1953, GIA formally created its diamond grading system, known as the 4 C's. The 4 Cs of diamond quality are the universally recognized diamond grading system still in use today. In 1955, GIA presented its first diamond grading reports, which became the hallmark of grading reports in the diamond industry.

GIA's Excellent to Poor Cut Diamond Grading System assesses the diamond's overall face-up appearance to predict the intensity levels of brightness, fire, and scintillation (the diamond's sparkle and interplay with light). GIA also screens every diamond submitted to determine if it is laboratory-grown. Round brilliant diamonds show how the ...

With AGS, the cut grading scale is from 0-10 (along with descriptive wording), 0 means Ideal and 8-10 means Poor. The GIA scale includes Excellent, Very Good, Good, Fair and Poor. A diamond graded …

You'll need to know about the 4Cs of diamond quality, metal characteristics, setting …. Diamond History. Where are Diamonds Found? Spotlight on Botswana Diamonds. September 21, 2020. Botswana is currently the world's second largest producer of diamonds. Some of the world's largest diamonds have been found here. …. Diamond …

The best way to assess any differences is by a direct comparison of their standards and grading systems. AGS use numerical values for their grading system with '0' or '0.0' being the highest quality and '10' denoting the lowest. The GIA uses characters; 'D' down to 'Z' for color grading and 'IF' (internally flawless ...

GIA invented the famous 4Cs of Color, Clarity, Cut and Carat Weight and, in 1953, created the International Diamond Grading System™ which is recognized around the world as the standard for diamond quality. Through research, education, gemological laboratory services and instrument development, the Institute is dedicated to ensuring …

grading system introduced by GIA more than 50 years ago that ranges from D (colorless) to Z (light yellow). With the acceptance of this system, color grade has become a critical component in the valua-tion of diamonds, leading to historic highs at the top end of the scale. In May 2008, the diamond in figure

The Four Cs of Lab Created Diamonds: Cut, Color, Clarity, & Carat Weight. Lab diamonds receive grading reports from independent gemological organizations on the 4Cs: Cut, Color, Clarity, and Carat Weight . Just like in mined diamonds, lab diamonds will exhibit variations across the 4Cs and range from poor to superlative quality.

GIA's system for evaluating cut has been modified over the decades. In 2006, after years of extensive research that included advanced computer modeling and observational studies, GIA introduced the GIA cut grading system for round brilliant cut diamonds. Today, the GIA Cut Scale, ranging from Excellent to Poor, describes how …

The AGS's cut grading system is superior and uses a robust optical ray-tracing method which measures the optical performance of a diamond. In essence, if you want a more precise certification in terms of cut, head over to AGS labs. The cut grading may be the only thin line separating AGS from GIA.

Depending on which diamond grading chart a particular jewel merchant uses, the grades of the diamonds can vary wildly. So, too, do the prices. There are a total of 4 different major diamond grading systems apart …

OGI Systems has been a global leader in diamond technology tools since 1990, providing intelligent solutions for diamond manufacturing, grading, and marketing. OGI Systems was established and is owned by Mr. Daniel Benjano. He later established service OGI companies such as OGITech, OGI Systems Europe, OGI India, OGI Asia, OGI …

This scale of clarity has become recognized as an international standard, with many jewelers around the world using the GIA scale. Again, AGS employs the same methodology, however, they grade on a scale of 0 to 10, with 0 aligning with GIA's FL grading and 9.5 – 10 aligning with GIA's I3 rating. Head to my Diamond Clarity article for more ...

The main differences between HRD and the IGI is that HRD is known as a diamond authority in Europe, but its standards are often less strict than other certifying institutions. The IGI frequently partners with large jewelry retailers and is a leader in grading lab-grown diamonds. We'll compare HRD versus IGI diamond certifications, including ...

The AGS 0–10 Diamond Grading System. The AGS 0–10 grading scale is easy to understand: the highest possible grade is zero, and the lowest is 10. Easy, huh? So, a diamond with a color grade of 3 has less color than a diamond with a color grade of 5.

The answer is quite simple. Diamonds are sold by weight. Stones cut to ideal proportions waste more of the diamond crystal, therefore weigh less than stones that are cut to maximize weight. Here are examples: The …