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Ass #10 - Key Terms and Concepts

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Questions and Answers

What primarily affects the clarity grade of a diamond?

The age of the diamond

The size, number, location, relief, and nature of clarity characteristics (correct)

The carat weight of the diamond

The color of the diamond

What clarity grade is considered "precise" while all others can vary based on the fact the no two diamonds are alike?

Flawless (correct)

Slightly Included

Very Slightly Included

Included

What is the primary function of a plot in diamond grading?

To map inclusions, blemishes, and facet arrangement (correct)

To estimate the carat weight of the diamond

To provide a market value assessment

To display the diamond's cut quality

Which of the following statements regarding eye-visible inclusions is correct?

VS, SI, and I stones can have eye-visible inclusions Signup and view all the answers

How do blemishes affect the clarity grade of diamonds?

They rarely affect grades lower than IF Signup and view all the answers

A Clarity Grade is usually determined by ....

the largest or most visible characteristics. Signup and view all the answers

Accurate clarity grading includes consideration of .....

the size and shape of the diamond in relation to its clarity characteristics. Signup and view all the answers

What size of inclusion has the most influence on the clarity grade?

The Largest Signup and view all the answers

The GIA Diamond Grading System provides .....

universally accepted way to communicate diamond quality. Signup and view all the answers

What is a contrast between an inclusion and its host gem ?

Relief Signup and view all the answers

If something is visible without magnification it is what?

Eye Visible Signup and view all the answers

Inclusions or blemishes that establish the clarity grade of a diamond are what ?

Grade Setting Characteristic Signup and view all the answers

Study Notes

Diamond Grading System

Eye-visible: Visible to the naked eye, no magnification needed.
Grade-setting characteristics: Inclusions or blemishes defining a diamond's clarity grade.
Plot: A map showing inclusions, blemishes, and facet arrangement.
Relief: Contrast between an inclusion and its host gem.

Key Concepts

GIA Diamond Grading System: A universally accepted system for communicating diamond quality.
Clarity characteristics: Size, number, location, relief, and nature influence clarity grade.
Large inclusions: Have the strongest impact on clarity grade.
Diamond uniqueness: No two diamonds are identical, making precise clarity grade descriptions difficult (except flawless).
Blemishes: Have little to no effect on clarity grades below IF.
Clarity grading: Primarily determined by the largest and most visible characteristics.
Visible inclusions: VS, SI, and I clarity stones may include visible inclusions.
Accurate grading: Considers size and shape of the diamond relative to its clarity characteristics.

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Description

Explore the intricacies of the GIA Diamond Grading System in this concise quiz. Understand key concepts such as clarity characteristics, inclusions, and blemishes that affect a diamond's quality. Test your knowledge on how these factors contribute to the overall grading of diamonds.