GIA DIAMONDS AND DIAMOND GRADING
FINAL EXAM 2025/2026 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTIONS |ALREADY
GRADED A+|NEWEST|BRAND NEW VERSION
!!!|LATEST UPDATE
What type of clarity characteristics determine the clarity grade of a dimaond?
Grade-setting
What characteristics are drawn only in green on a plot?
Blemishes
What is a term that describes tone?
Degree of darkness; lightness of a color
What color becomes more prominent as warm hues become less saturated?
Brown
What term falls on the GIA D-Z color scale?
Colorless, near-colorless, faint, very light, light
What is the correlation between a mastertone and the grade it represents?
Universal standard, maintains consistency
Why must a diamond be re-examined under magnification after color grading?
Confirm identity
What diamond size makes it easiest to see subtle color?
The larger the diamond, the easiest it is to see color
What results from averaging the sum of the smallest and largest diameters of a round brilliant
Average girdle diameter
1|Page
,How many crown angles on a round brilliant diamond should be estimated before averaging?
8
What weight retention method lightly polished lower half facets?
Painting
What may result from a thick, unpolished girdle?
Grey, reflection on the stone
How is a diamond positioned to estimate the lower half facet length percentage?
Face up position
Why do diamonds with steep crowns offer less vaule?
Look smaller face-up than weight suggest
What describes the polish quality and cut precision of a diamond?
Craftmanship
What proportion greatly influences brightness in a round brilliant diamonds?
Table percentage
How do steep pavilion angles affect appearance?
Produce dark areas under the table
What parameters is measured at the belly of an oval?
Width
What are the clarity fractors used for grading fancy cuts?
Size, number, location, relief, nature
How does graders view the bow-tie effect in a stone?
Face-up
What is a fancy shape diamond compared to when judging appeal?
Should be graceful and pleasing
Should be the standard for their particular shape and style
What is a square or rectangular modified brilliant cut?
2|Page
, Radiant
Why is the face down diagonal direction used for color grading fancy-cut diamonds?
Shows average amount of color
What helps reveal inclusions hidden by a moutning?
Reflections
What clarity grade can a potential become?
They can be repolished to improve clarity up to an internally flawless grade
What is a consideration for diamond recutting?
Cost to recut
What do appraisers assign to small mounted diamonds when clarity grading?
Range of grades
What value adding process does a diamond mining company perform?
Categorize and sorting the diamonds
What trade organization formed in 2015 to expand demand for the diamond industry?
Diamond producers association (DPA)
What advertising method is key to the current diamond market?
Internet
What industrial-grade diamond typically form as single very included crystals?
Bort
What made it difficult for independent claim holders to survive during the diamond rush in
South Africa?
Expenses
What metal dominated melts related to CLIPPIR diamond formation?
Iron
What layer is solid but has a portion that is mobile?
mantle
3|Page
FINAL EXAM 2025/2026 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTIONS |ALREADY
GRADED A+|NEWEST|BRAND NEW VERSION
!!!|LATEST UPDATE
What type of clarity characteristics determine the clarity grade of a dimaond?
Grade-setting
What characteristics are drawn only in green on a plot?
Blemishes
What is a term that describes tone?
Degree of darkness; lightness of a color
What color becomes more prominent as warm hues become less saturated?
Brown
What term falls on the GIA D-Z color scale?
Colorless, near-colorless, faint, very light, light
What is the correlation between a mastertone and the grade it represents?
Universal standard, maintains consistency
Why must a diamond be re-examined under magnification after color grading?
Confirm identity
What diamond size makes it easiest to see subtle color?
The larger the diamond, the easiest it is to see color
What results from averaging the sum of the smallest and largest diameters of a round brilliant
Average girdle diameter
1|Page
,How many crown angles on a round brilliant diamond should be estimated before averaging?
8
What weight retention method lightly polished lower half facets?
Painting
What may result from a thick, unpolished girdle?
Grey, reflection on the stone
How is a diamond positioned to estimate the lower half facet length percentage?
Face up position
Why do diamonds with steep crowns offer less vaule?
Look smaller face-up than weight suggest
What describes the polish quality and cut precision of a diamond?
Craftmanship
What proportion greatly influences brightness in a round brilliant diamonds?
Table percentage
How do steep pavilion angles affect appearance?
Produce dark areas under the table
What parameters is measured at the belly of an oval?
Width
What are the clarity fractors used for grading fancy cuts?
Size, number, location, relief, nature
How does graders view the bow-tie effect in a stone?
Face-up
What is a fancy shape diamond compared to when judging appeal?
Should be graceful and pleasing
Should be the standard for their particular shape and style
What is a square or rectangular modified brilliant cut?
2|Page
, Radiant
Why is the face down diagonal direction used for color grading fancy-cut diamonds?
Shows average amount of color
What helps reveal inclusions hidden by a moutning?
Reflections
What clarity grade can a potential become?
They can be repolished to improve clarity up to an internally flawless grade
What is a consideration for diamond recutting?
Cost to recut
What do appraisers assign to small mounted diamonds when clarity grading?
Range of grades
What value adding process does a diamond mining company perform?
Categorize and sorting the diamonds
What trade organization formed in 2015 to expand demand for the diamond industry?
Diamond producers association (DPA)
What advertising method is key to the current diamond market?
Internet
What industrial-grade diamond typically form as single very included crystals?
Bort
What made it difficult for independent claim holders to survive during the diamond rush in
South Africa?
Expenses
What metal dominated melts related to CLIPPIR diamond formation?
Iron
What layer is solid but has a portion that is mobile?
mantle
3|Page
