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Venus Jewel - Diamond Grading System VGS

The Venus Grading System ® (VGS ®) is a proprietary tool for describing diamonds in precise detail.We measure twenty aspects of every polished diamond and carefully grade each unique characteristic against exact standards and sets of reference gems (commonly known as master stones).

SRK | Grading

Comprehensive grading system that explains the 16 diamond grading parameters . SRK Grading System (SGS) Pure Transparency. SGS is a metric derived over a transparent 16-step process to authenticate the true value of a diamond. The system is so refined that objectivity truly wins over subjectivity.

How to Evaluate a Diamond Grading Certificate (with …

Feb 08, 2017· Check for a grading from the GIA. The Gemological Institute of America (GIA) is a non-profit institute that created the "four Cs" (Cut, Clarity, Color and Carat Weight) methodology of grading diamonds, as well as the International Diamond Grading System.

Diamond clarity - Wikipedia

Diamond clarity is the quality of diamonds that relates to the existence and visual appearance of internal characteristics of a diamond called inclusions, and surface defects, called blemishes. Clarity is one of the four Cs of diamond grading, the others being carat, color, and cut .

Consumer Alert: Diamond Grading Labs to Avoid - …

If the same exact diamond was sent to a reliable grading lab like GIA or AGS, you can bet that the diamond would return with SIGNIFICANT lower ratings. You basically paid Tiffany-like prices for a diamond that's isn't cut to ideal standards.

Diamond Certification: GIA, AGS, HRD, IGI, EGL, GSI, …

Although the 4 Cs of diamond grading were quite well known and there were a number of other grading systems in use, it was felt that there was a need to have a uniform grading system to promote consistency across the industry.

Diamond Grading - Gemology Online

Diamond Grading: The 4 C's. The 4 C's, when referring to diamond value, are color, clarity, carat weight and cut. All four factors are equally important in determining the final cost of a diamond.

AGS vs GIA | Whiteflash

AGS vs GIA – Cut grading on fancy cuts AGSL has developed the only scientifically vetted system for analyzing cut quality and light performance in diamonds. The beauty of the AGSL system is that it can be applied across multiple diamond shapes and …

OGI Systems Ltd. | Advanced Diamond Technological …

OGI Polish Systems provides solutions to wholesalers, gem labs and retailers for laser diamond inscription, re-cut and cut grading of GIA, AGS, HRD, IGI proportions, symmetry and light performance.

What is Diamond Color | The 4Cs of Diamond Quality …

GIA's D-to-Z diamond color-grading system measures the degree of colorlessness by comparing a stone under controlled lighting and precise viewing conditions to masterstones of established color value.

Diamond Grading System and the 4 C's | Diamonds Rock

Color, Cut, Clarity and Carat Weight are the factors used to determine the quality and value of a Diamond. We discuss Diamond Grading in full detail, here.

The Diamond Grading System - Diamond Authority

Before going to the jewelry store, you might want to find out more about the diamond grading system. As with any purchase, there are features and benefits which can help you get the best product and value for your money.

GIA | On Diamond Cut

The GIA Diamond Cut Grading System assigns one of these five grades to describe the overall cut quality of a standard round brilliant diamond in the GIA D-to-Z color range, and the Flawless-to-I 3 clarity range. Each cut grade represents a range of proportion sets and diamond appearances, each of which may conform in different ways to the …

Diamond Grading, Diamond Grades, Quality, Certification

Diamond Grading, Grades. When purchasing certified diamonds it is important to understand the diamond grading criteria used by the laboratories performing the certification. Diamond grading covers numerous aspects of each individual diamond's qualities, but there are four grades which are critical to understand:


The grading systems most commonly used include GIA (Gemological Institute of America), IDC (International Diamond Council), Scan. D.N. (Scandinavian Nomenclature), and CIBJO (Confederation Internationale de la Bijouterie, Joaillerie, Orfevrerie, des Diamants, Perles et Pierres).

Diamond Clarity: Grading Scale and Buying Tips | Blue Nile

In 1953, Richard T. Liddicoat and colleagues established the Gemological Institute of America (GIA) diamond grading system and clarity scale. The GIA diamond grading scale is divided into six categories and eleven diamond clarity grades.

The 4 C's Of Diamond Grading

Diamond grading is the act of assessing a diamond and grading it according to industry set diamond standards. When grading a diamond, a gemologist will first establish the 4 C's of the stone. While these are not the only factors that affect diamond price, they are arguably the most important.

Diamond Grading System and the 4 C's | Diamonds Rock

Color, Cut, Clarity and Carat Weight are the factors used to determine the quality and value of a Diamond. We discuss Diamond Grading in full detail, here. Color, Cut, Clarity and Carat Weight are the factors used to determine the quality and value of a Diamond. We discuss Diamond Grading in full detail, here. ... Diamond Grading System ...

GIA | On Diamond Cut

The Gemological Institute of America, GIA, introduces the new cut grading standard for round brilliant diamonds, the GIA Diamond Cut Grading System and a free online tool for predicting the cut grade of a diamond, the GIA Facetware Cut Estimator. Cut has long been the least understood of the 4Cs. After many years of research involving advanced …

Guide to GIA's Diamond Cut Grading System - …

Below are the details that will help you understand GIA's diamond cut grading system, and what distinguishes an "excellent" from a "good" or "fair" cut. Excellent Grade (EX) Excellent Grade has high brilliance, scintillation and …

Diamond Grading System - Ganoksin Jewelry Making …

One of the important reasons for the dominance of diamond in the gem market is the existence of a comprehensive and internationally-accepted system of quality analysis. This allows us common folk to buy with confidence, for with a diamond grading report we have an independent "expert" opinion of ...

GIA, AGS, EGL and other diamond grading certificates ...

The key differences between the grading agencies are their diamond color and clarity grading systems, which might be somewhat difficult to compare against each other due to differences in scale. Over the years, however, some agencies made an effort to standardize their grading scales with that of GIA.

4 C's of Diamonds | Diamond Grading Chart

diamond grading chart Every diamond certified by the GIA undergoes a thorough, independent evaluation. Here you will learn how GIA diamond grades are established, and how those grades affect the diamond's price.

EGG GRADING SYSTEMS - intechllc.net

EGG GRADING SYSTEMS. Diamond Systems combines its 70 years of experience with innovative new ideas to serve the egg industry. Knowledge of the industry, machine systems and services provide the partnership egg …

History of Diamond Grading

Diamond grading is a complex process, part science and part art. The contemporary diamond grading system is a standardized, global way for jewelers, laboratories, and consumers to establish the characteristics of a given diamond.

Diamond Certification - What does GIA, AGS and EGL ...

AGS and GIA are laboratories which came up with diamond certifications grading systems that grade diamonds according to the clarity, cut and color. They have since become an industry standard for the grading of diamonds across the world.

GIA Diamond Grading Report | Blue Nile

A Diamond Grading Report documents the specific characteristics of a diamond. These reports are issued by the Gemological Institute of America (GIA), which is among the most respected organizations in the diamond industry.. GIA Diamond Grading Report. The GIA set the standard for diamond grading and gemological identification, and their diamond grading system …

AGS Diamond Grading System - American Gem Society

The American Gem Society is determined to help you find the gem you want. Learn more about the AGS diamond grading system at AmericanGemSociety.org.

Diamonds.net - Grading the Graders

Jun 14, 2013· A survey by RapNet – the Rapaport Diamond Trading Network, found significant differences between laboratories grading the same diamond. While there is a common language used in the grading of diamonds, there are clear inconsistencies in the use of that language, concluded Saville Stern, chief operating officer of RapNet.

your benefits - International Diamond Laboratories diamond ...

International Diamond Laboratories is licensed to grade in accordance with the GIA Diamond Cut Grading System. The system is the result of extensive computer modeling and observations on actual stones to validate the science.

GIA 4Cs Clarity

Diamond clarity refers to the absence of these inclusions and blemishes. Diamonds without these birthmarks are rare, and rarity affects a diamond's value. Using the GIA International Diamond Grading System™, diamonds are assigned a clarity grade that ranges from flawless (FL) to diamonds with obvious inclusions (I 3 ).

Diamond color - Wikipedia

Diamonds have a color grading system that refers to the absence of color. This system goes from D to Z. The more colorless a diamond is, the rarer and more valuable it is because it appears white and brighter to the eye. History of color grading. Color grading of diamonds was performed as a step of sorting rough diamonds for sale by ...