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GIA final exam, diamond grading exam, GIA diamonds test, gemology questions and answers, diamond quality assessment, GIA grading standards, gemological exam 2025
What can UV-Vis-NIR spectroscopy help identify? - ANSWER- A diamond's absorption of visible light, portions or UV light and infrared regions close to the visible range
What is an agreement that involves multiple payments over time? - ANSWER-Terms of payment
What is the per-carat price of a 2ct diamond selling for $40,000?
- ANSWER-$20,000
What parcel price comes at a premium? - ANSWER-Pick price
How do dealers quote diamond prices? - ANSWER-Per-carat price
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What is the term for flaws or imperfections in a diamond? - ANSWER-Inclusions
What can help determine a clarity characteristics location? - ANSWER-Loupe/microscope
What clarity characteristic is found only on the surface of a gemstone? - ANSWER-Blemishes
What clarity characteristic results when a crystal is expelled? - ANSWER-Cavity
Where are inclusions most visible? - ANSWER-Directly under the table
What kind of clarity characteristic is not seen at 10x mag.? - ANSWER-Cloud or pinpoint
What describes the contrast btwn an inclusion and the diamond?
- ANSWER-Relief
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What best describes the clarity characteristics in SI1 and SI2 stones? - ANSWER-Noticeable inclusions that are very easy to see at 10x mag.
Where is a feather that reaches both the crown and pavilion plotted? - ANSWER-Plotted on both the crown and pavilion diagrams
What is a term that describes tone? - ANSWER-Degree of darkness or lightness
What color becomes more prominent as cool hues become less saturated? - ANSWER-Gray
What term falls on the GIA D-to-Z color scale? - ANSWER- Light
What material are masterstones? - ANSWER-Diamonds
What position are colored diamonds color graded in? - ANSWER-Face-up
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Where is the focus when color grading a heavily included diamond? - ANSWER-The least included area
How do you measure a diamond's depth? - ANSWER- Millimeter gauge OR as a percentage of its average diameter
How many star facet lengths on a round brilliant diamond are estimated before averaging? - ANSWER-8
What weight retention method can change the balance of the diamond's face-up pattern? - ANSWER-Painting
What facet forms the pavilion angle when it meets the girdle plane? - ANSWER-Pavilion
What pavilion depth percentage might reflect the girdle face-up through the table? - ANSWER-37%
Why do diamonds with thick girdles offer less value? - ANSWER-Paying for more weight than you see
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