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.

GIA’s 4Cs transformed the way diamond quality is determined and communicated, forever changing how diamonds are evaluated, bought and sold. The 4Cs are for everyone. This framework is both a way to better understand your diamond, and to ensure accuracy in the evaluation of your diamond’s unique characteristics.

GIA's diamond cut grading system. Assessing the major components of a diamond, as well as its ability to interact with light, the Diamond Cut Grading System provides a standard system for consistently evaluating and documenting the cut quality of a standard round brilliant diamond from Excellent to Poor.

Color, Clarity, Cut and Carat Weight are collectively called the 4Cs of diamond quality. Color measures a diamond’s absence of color. Clarity considers a diamond’s inclusions and blemishes and how they affect its appearance. Cut describes the diamonds fire, brilliance and proportions.

23 小时之前 · GIA 4Cs Carat Weight Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip. (Don’t confuse carat with karat, as in “18K gold,” which refers to gold purity.)

In the 1940s and ’50s, GIA developed the 4Cs and the International Diamond Grading System™ to objectively compare and evaluate diamonds. The 4Cs of diamond quality will give you a wealth of information about a diamond’s characteristics and value, but they can’t describe one elusive quality – beauty.

2024年9月23日 · Everything retailers and their customers need to know about diamonds just got easier to find and understand with GIA’s redesigned consumer-facing website dedicated to the 4Cs of Diamond Quality – Clarity, Cut, Color and Carat Weight – and to serve as the go-to source for gemstone information.

GIA's 4Cs brochures are designed to address questions customers have about the 4Cs and the diamond grading process. Place these brochures on your counter, or use them as a PDF on your website. These brochures are available in 18 languages—so it's a …

GIA 4Cs Education Kit helps you teach your customers about the 4Cs and International Diamond Grading System™. Includes: (1) 4Cs Counter Display (50) 4Cs of Diamond Quality Brochure (50) A Guide to Understanding GIA Diamond Grading Reports

GIA offers the world’s most rigorous assessment of the 4Cs . Diamond Color Grading. Viewed in a standardized environment, every diamond’s color is graded against masterstones. Multiple GIA graders independently evaluate each diamond and use our proprietary grading technology.