Diamond Color Chart: The Official GIA Color Scale - GIA 4Cs
Jul 8, 2015 · In this post, you can learn about and download the official GIA Color Scale, work with an interactive diamond color chart to see the relationship between grades and colors, and watch a useful GIA Diamond Color Grading video to see how GIA evaluates diamond color.
GIA Gem Encyclopedia | Complete List Of Gemstones
GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research.
GIA 4Cs Color D-to-Z
GIA’s color-grading scale for diamonds is the industry standard. The scale begins with the letter D, representing colorless, and continues with increasing presence of color to the letter Z, or light yellow or brown. Each letter grade has a clearly defined range of color appearance.
What Does the GIA Colored Gem Grading Code Mean?
The GIA grading system describes gem color in terms of hue, tone, and saturation. Learn what the abbreviations and numbers of this gem grading code signify.
Home | GIA 4Cs
Created by GIA, the 4Cs are the global standard for assessing the quality of diamonds and allow you to compare one diamond to another. In brief, the 4Cs are: Color: Color is graded on a D-to-Z scale, with D meaning that a diamond is completely colorless and Z meaning that a diamond has light yellow or brown color. In this color range, diamonds ...
Diamond Color Charts & Complete Guide - International Gem …
Learn about the GIA color grading scale and how fluorescence and metal settings can impact the appearance of diamond colors. Since the Four Cs aren't as distinct as they may seem, we'll also recommend the combinations of color, clarity, cut, and carat to look for when buying a diamond.
Gemology Cheat Sheets - International Gem Society
Evaluating Gemstone Color. GIA color descriptions follow this format: hue description and tone/saturation values. For example, a fine ruby would be slbR 6/6; slightly bluish Red, tone Medium, saturation Vivid. When describing hue, list modifying terms first and capitalized the predominant color.
GIA Diamond Grading Reports: Understanding the Diamond Color …
Jan 26, 2016 · GIA Diamond Grading Reports and GIA Diamond Dossiers® depict a chart called the GIA Diamond Color Scale, showing the 23 grades for diamonds that fall within the D-to-Z color range. This is a reference tool for you to use to see how …
Colored Diamonds | Fancy Colored Diamonds - GIA
Gem diamonds in GIA’s D-to-Z range usually decrease in value as the color becomes more obvious. Just the opposite happens with fancy color diamonds: Their value generally increases with the strength and purity of the color. Large, vivid …
Diamond Color Chart | GIA Diamond Color Grading Scale - The Diamond …
Aug 30, 2024 · To provide shoppers with an understanding of each diamond’s color level, grading entities like the Gemological Institute Of America (GIA) use a diamond color chart to judge diamonds based on their appearance and give each stone a color grade within a given scale.
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