GIA Diamond Grading Scales: The Universal Measure of Quality
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 Color Chart: The Official GIA Color Scale - GIA 4Cs
2015年7月8日 · The 23 color grades on the GIA Color Scale (or diamond color chart) are subdivided into five subcategories, which are: colorless (D-F); near colorless (G-J); faint (K-M); very light (N-R); and light (S-Z). Each letter grade has a …
GIA Diamond Grading | GIA 4Cs
The GIA Diamond Grading Report. This report uses the universally accepted GIA standards to determine a natural diamond’s shape, color, clarity, cut and carat weight – as well as proportions, finish and treatments. It also includes a plotted diagram which maps your diamond, identifying its unique characteristics. The GIA Diamond Origin Report.
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.
Types of GIA Reports
The GIA Diamond Grading Report. This report uses the universally accepted GIA standards to determine a natural diamond’s shape, color, clarity, cut and carat weight – as well as proportions, finish and treatments. It also includes a plotted diagram which maps your diamond, identifying its unique characteristics. The GIA Diamond Origin Report.
Diamond Clarity - GIA 4Cs
The clarity of a diamond is based on the size, location, visibility and number of inclusions or blemishes. Internal and surface reaching characteristics are called inclusions. External features are called blemishes. Precise clarity grading is the secret to accurately evaluating a diamond.
Print the GIA Diamond Buying Guide with Charts and Printable …
2013年2月11日 · Here is a printable diamond buying guide designed to help anyone shopping for a diamond understand the 4Cs of Diamond Quality; Color, Clarity, Cut and carat weight.
Grading the 4Cs - GIA 4Cs
Diamond Clarity Grading. Viewed with 10x magnification under standard conditions, multiple graders independently evaluate each diamond. First addressing any clarity enhancements or surface coatings, they document the diamond’s clarity, polish, and symmetry, while plotting the clarity characteristics on the diagram most representative of the ...
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.
Diamond Color - GIA 4Cs
Today, the GIA D-to-Z Color Scale provides an internationally recognized scale for grading color depth which not only accounts for the colors we can see, but the subtle differences in each hue that define the quality of a diamond.