Ass #15 Key Terms and Concepts

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Questions and Answers

What does it mean when a diamond is described as 'improvable'?

It has significant inclusions that cannot be improved.

It can be enhanced to a VVS1 or VVS2 grade. (correct)

It can be restored to a lower grade than initially assessed.

It is already at its highest possible clarity.

Which primarily factor needs to be considered before a diamond is recutting?

The color of the diamond.

The size of inclusions.

The value of the finished diamond (correct)

The weight of the diamond.

What is one key consideration when repolishing a diamond?

It addresses minor faults in clarity or finish. (correct)

It guarantees an increase in overall carat weight.

It should correct only extreme damage.

It can only be done if the diamond is flawless.

Why is it important for a grader to observe reflections when assessing a diamond?

To identify inclusions obscured by mounting prongs. Signup and view all the answers

What should be known before recutting a diamond for sale?

The market demand for the new shape. Signup and view all the answers

What largely governs its style when recut?

A diamond’s original cutting style Signup and view all the answers

Cutters usually work with angles rather than percentages, so ........

that’s what jewelers should provide Signup and view all the answers

Diamond that can be repolished to improve clarity to an Internally Flawless grade is ....?

Potential Signup and view all the answers

Repairing damage or refashioning a polished diamond to improve its clarity, proportions, or color, or to modernize an old-style cut is ........

Recutting Signup and view all the answers

A mounting almost always.........

limits your ability to assess a diamond. Signup and view all the answers

What is the key to accurate weight estimation?

practice Signup and view all the answers

What can affect the accuracy of estimated weight?

Proportion variations like thick girdles Signup and view all the answers

Diamonds in jewelry are ........

vulnerable to damage Signup and view all the answers

Today, there’s equal interest in maintaining or creating ...........

old-style cuts and in recutting them as modern brilliants. Signup and view all the answers

The weight correction factors for fancy cuts allow for .........

variations that aren’t seen in rounds. Signup and view all the answers

What do appraisers assign to small mounted diamonds when clarity grading?

a range of two possible grades Signup and view all the answers

Study Notes

Diamond Grading and Concepts

Diamonds can be repolished to improve clarity (VVS1 or VVS2 grade) or potentially to Internally Flawless grade.
Recutting repairs damage or refashions a polished diamond improving clarity, proportions, or color, to modernize an older style cut.
Repolishing refinishes a polished diamond to fix clarity or finish flaws.

Key Diamond Concepts

A mounting often hides features of a diamond.
A grader may use light reflections to discover inclusions hidden by prongs.
Practice improves accurate weight estimation.
Proportions (girdle thickness) affect weight estimation accuracy.
Estimated weight estimations may vary from actual weights in certain cuts.
The value of the finished diamond guides recutting decisions.
Variations in cut (fancy cuts), may not appear in rounded diamonds.
Diamonds are vulnerable to damage in jewelry.
Modern cuts and old-style cuts are equally important today.
Original cutting style influences the final recut style of a diamond.
Market demand impacts recut shape choices.
Jewelers typically use angles over percentages for cuts.

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Description

Test your knowledge on diamond grading techniques and key concepts related to diamond clarity, cutting, and proportions. This quiz covers important factors affecting diamond value and the impact of mounting on visibility. Perfect for gemology students or enthusiasts looking to deepen their understanding of diamonds.