Not sure the size of a particular diamond based on its carat weight? Our helpful guide breaks down diamond sizes by diamond shape and millimeter (mm) size.

Find an AGS Jeweler to get your diamond looked at by a certified jeweler or take a closer look into the history of diamonds. This diamond rating chart can help you choose the right gem. Learn the color and clarity criteria by which diamonds are graded for valuation purposes.

2015年7月8日 · 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.

2013年3月14日 · GIA created the 4Cs (Color, Clarity, Cut and Carat Weight) as a universal method for establishing the quality of any diamond, anywhere in the world. The 4Cs means two very important things: diamond quality can be communicated in a universal language, and diamond-buying consumers can know exactly what they are about to purchase.

2024年8月30日 · 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.

DIAMOND GRADING CHART CLARITY Internally Flawless Very Very Slightly Included Very Slightly Included Slightly Included Included I.F. VVS 1 VVS 2 VS 1 VS 2 SI 1 SI 2 I 1 I 2 I 3 CARAT COLOR D - F Colorless G - J Near Colorless K - M Slightly Tinted N - R Very Light S - Z Light CUT Total Depth Crown Table Width Angle Pavilion Angle Girdle ...

2015年8月13日 · Use this interactive diamond clarity scale to learn about the different types of blemishes and inclusions, their names, and how they might appear under magnification. Toggle through the examples, and mouse over the diamonds to see how blemishes and inclusions can impact a diamond’s appearance at each grade level on the diamond clarity scale.

Below is a diamond chart with a rating system that will help you to evaluate stones of specific color and diamond clarity combinations. This diamond chart compares diamonds starting with the most prized color D (colorless) and balances them with loose diamonds of various clarity.

Complete guide to the 4 C's of diamonds; Cut, Color, Clarity, and Carat weight. Including charts and guides showing how diamond grades affect appearance and value.

Learn everything you need to know about the diamond color scale to select the perfect diamond for you. Absolutely colorless or icy white. The highest color grade—extremely rare and most expensive. What Is Diamond Color? Diamond color refers not to the presence of color within a diamond but to the absence or lack of it.