Chapter 15 Key Concepts & Terms Flashcards
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What does a mounting almost always limit?
Your ability to assess a diamond
Mountings can obstruct the view of the diamond’s features.
How can a grader see inclusions that are hidden?
By using reflections from prongs
This technique helps reveal features not visible from a direct view.
What is key to accurate weight estimation of diamonds?
Practice
Regular practice helps improve estimation skills.
What can affect the accuracy of estimated weights in diamonds?
Proportion variations like thick girdles
Variations in proportions can lead to significant differences in weight estimation.
What do weight correction factors for fancy cuts allow for?
Variations that aren’t seen in rounds
Fancy cuts require different considerations than traditional round cuts.
What are diamonds in jewelry vulnerable to?
Damage
Jewelry settings can expose diamonds to risks of scratches and chips.
What is the ultimate consideration when recutting a diamond?
The value of the finished diamond
Ensuring that the recut enhances the diamond’s value is crucial.
What is the current interest regarding old-style cuts?
Maintaining or creating them and recutting them as modern brilliants
There is a trend in both preserving traditional styles and updating them.
What largely governs a diamond’s style when recut?
Its original cutting style
The original cut influences the final appearance after recutting.
What should you know before recutting a diamond for sale?
Market demand for the new shape
Understanding market trends can inform the decision to recut.
What do cutters usually work with instead of percentages?
Angles
Jewelers should provide angle measurements for accurate cutting.
What is repolishing in the context of diamonds?
Refinishing a polished diamond to correct minor faults in its clarity or finish.
Repolishing is often done to enhance the visual appeal of the diamond.
What does recutting a diamond involve?
Repairing damage or refashioning a polished diamond to improve its clarity, proportions, or color, or to modernize an old-style cut.
Recutting can significantly alter the diamond’s appearance.
What defines a diamond as having potential?
A diamond that can be repolished to improve clarity to an Internally Flawless grade.
Internally Flawless refers to a diamond with no internal imperfections visible under 10x magnification.
What does it mean when a diamond is classified as improvable?
A diamond that can be repolished to improve clarity to a VVS1 or VVS2 grade.
VVS1 and VVS2 indicate very very slight inclusions, which are difficult to see even under magnification.
