GIA Diamond Grading Scales: Universal Quality Measure - GIA 4Cs
2013年3月14日 · The prospect of purchasing a diamond may seem daunting, but through GIA, an unbiased authority on diamonds, you have several handy resources to help you select the highest quality diamond. First up, an overview of the 4Cs: Color, Clarity, Cut, and Carat Weight.
Diamond Rating & Grading Charts - American Gem Society
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.
Diamond Clarity Chart: The Official GIA Diamond Clarity Scale
2015年8月13日 · GIA diamond grading reports list a diamond’s clarity grade and also provide a clarity chart – known as the official GIA Diamond Clarity Scale – depicting the eleven clarity grades for natural diamond within the diamond clarity scale.
Diamond Color Chart: The Official GIA Color Scale - GIA 4Cs
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.
GIA Cut Grading System Charts and Booklets
Estimating a Cut Grade Using the GIA Diamond Cut Grading System Explains the system, gives definitions, and displays the proportions listed on a GIA Diamond Grading report.
The 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 diamond’s proportions.
4 C's of Diamonds | Diamond Grading Chart
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.
Diamond Grading Chart – AGI | International Gemological …
AGI’s diamond clarity scale has 11 grades ranging from Flawless (FL) to Included (I). The classification system focuses on how difficult it is for a skilled grader to see inclusions and blemishes under 10x magnification.
Diamond Grading | Decoding the Mystery Behind Each Stone
2024年12月9日 · In this comprehensive guide, we’ll break down the process of diamond grading, focusing on the Four Cs, Cut, Color, Clarity, and Carat, so you can fully appreciate what makes each diamond special. What is Diamond Grading and How It Impacts Value?
4 C’s of Diamonds | Guide to Diamond Types, Grades & Prices
If you're wondering what to look for in a diamond, the best place to begin is by understanding the 4 C's: cut, color, clarity, and carat. Created by the Gemological Institute of America (GIA) in the 1940s, the 4 C's act as a universal scale to describe and determine the quality of diamonds.