Podcast
Questions and Answers
What does the term 'blemish' refer to in the context of gemstones?
What does the term 'blemish' refer to in the context of gemstones?
- An internal inclusion affecting the overall clarity
- A type of illumination used in gemstone grading
- A treatment process for enhancing clarity
- A characteristic solely found on the surface of a polished gemstone (correct)
Which illumination method uses a black non-reflective background?
Which illumination method uses a black non-reflective background?
- Reflected illumination
- Darkfield illumination (correct)
- Brightfield illumination
- Flash effect illumination
What is a feather in diamond terminology?
What is a feather in diamond terminology?
- Any break in a diamond (correct)
- A method of grading diamond quality
- A type of clarity characteristic exclusive to colored diamonds
- A natural imperfection caused by the diamond cutting process
What does fracture filling in a diamond involve?
What does fracture filling in a diamond involve?
During diamond grading, which characteristic is critical for setting a diamond's value?
During diamond grading, which characteristic is critical for setting a diamond's value?
What should you disclose regarding laser drilling in diamonds?
What should you disclose regarding laser drilling in diamonds?
Which tool is recommended for grading diamonds effectively?
Which tool is recommended for grading diamonds effectively?
What is the 'flash effect' in diamonds?
What is the 'flash effect' in diamonds?
What does the 'depth of field' refer to in diamond magnification?
What does the 'depth of field' refer to in diamond magnification?
How can a natural feature be viewed in terms of diamond cutting?
How can a natural feature be viewed in terms of diamond cutting?
What lighting to create a bright background with light being directed from below?
What lighting to create a bright background with light being directed from below?
What clarity characteristic totally is enclosed in a polished gemstone or extending into it from the surface ?
What clarity characteristic totally is enclosed in a polished gemstone or extending into it from the surface ?
Definition of Clarity Characteristic ...
Definition of Clarity Characteristic ...
What is one of the most important aspects of the GIA Diamond Grading System?
What is one of the most important aspects of the GIA Diamond Grading System?
When noting inclusions and blemishes you should use ...
When noting inclusions and blemishes you should use ...
Your first impression of what appearance should strongly influence its clarity grade?
Your first impression of what appearance should strongly influence its clarity grade?
Flashcards
Clarity Characteristic
Clarity Characteristic
Internal or external feature of a gemstone affecting quality and identification.
Blemish
Blemish
Surface imperfection in a polished gemstone.
Inclusion
Inclusion
Clarity characteristic totally enclosed within a gemstone, or extending onto the surface.
Brightfield Illumination
Brightfield Illumination
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Darkfield Illumination
Darkfield Illumination
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Depth of Field
Depth of Field
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Feather
Feather
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Flash Effect
Flash Effect
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Fracture Filling
Fracture Filling
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Clarity Grading
Clarity Grading
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Study Notes
Key Terms and Concepts
- Blemish: Clarity characteristic limited to a gemstone's surface.
- Brightfield Illumination: Diamond lighting from below, creating a bright background.
- Clarity Characteristic: Internal/external gemstone feature influencing quality and identification.
- Darkfield Illumination: Diamond lighting from the side, against a black background.
- Depth of Field: Clear and sharp focus distance above and below a focal point.
- Feather: A diamond break.
- Flash Effect: Color change in a fracture-filled diamond, observed parallel to the filling.
- Fracture Filling: Molten glass injection into a diamond to fill cracks.
- Inclusion: Enclosed clarity characteristic within or extending from a gemstone's surface.
Key Concepts
- Clarity Grading: Crucial aspect of the GIA Diamond Grading System.
- Clarity Characteristics: Determine a stone's clarity grade, value, and identity.
- Diamond Face-up Appearance: Strongly influences clarity grade.
- Diamond Grading Loupe: Quality loupe with magnification lenses.
- Inclusions and Blemishes: Use abbreviations to note these.
- Laser Drilling: Disclosure of presence is required.
- Natural Characteristics: Efficient cutting can be implied by a gemstone's naturally occurring features.
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Description
This quiz explores essential terms and concepts related to diamond clarity, including various illumination techniques, clarity characteristics, and their impact on grading. Test your understanding of how these features affect the quality and value of diamonds.
