Diamonds and Diamond Grading Exam
Questions With New Update Solutions
2025\2026
/. What describes the distance that's clear and sharp above and below a focus point? -
Answer-depth of field
/.What type of loupe has been corrected for color distortion and linear distortion? -
Answer-Triplet
/.What do clarity characteristics help determine? - Answer-Identity
/.What are diamond's inclusions and blemishes called? - Answer-Clarity characteristics
/.What is the abbreviation for a tiny crystal that looks like a very small dot at 10x? -
Answer-Pp
/.What does chromatic aberration cause? - Answer-Rainbow effect at edges of lens
/.What magnification is used to assess clarity characteristics' visibility? - Answer-10x
/.What clarity characteristic is caused by treatment? - Answer-Laser drill-hole
/.What is an advantage of a loupe versus a microscope in clarity grading? - Answer-
Portability
/.Where does light enter a stone in darkfield illumination? - Answer-Side
/.What type of characteristic is in focus while the surface is out of focus? - Answer-
Inclusion
/.What are the two types of inclusions? - Answer-Totally enclosed and surface-reaching
/.Which factor of clarity characteristics can influence a diamond's clarity grade? -
Answer-Size
/.What clarity grade are diamonds with minor inclusions difficult to somewhat easy to
see under 10x? - Answer-VS1 or VS2
/.What describes the nature of a clarity characteristic? - Answer-type
/.What must be listed first on the Key to Symbols? - Answer-Laser Drill-Holes
, /.What is an advantage of the GIA clarity grading system? - Answer-Uniform evaluation
/.Where is a feather that reaches both the crown and pavilion plotted? - Answer-On both
the crown and pavilion diagrams
/.What clarity range can have inclusions visible to the unaided eye? - Answer-Included
/.What are clarity characteristics that don't affect the clarity grade called? - Answer-Non-
callable
/.What is a plot? - Answer-Map of clarity characteristics
/.What best describes the clarity characteristics in SI1 and SI2 stones? - Answer-
Noticeable
/.What would disqualify a stone from being graded IF? - Answer-Pinpoint
/.What is considered in addition to the five factors when assigning a clarity grade? -
Answer-Diamond size and shape
/.What is most efficient for systematic examination during clarity grading? - Answer-
Microscope
/.What has more effect on the clarity grade of a diamond? - Answer-Deep feather
/.What should be included when judging the number of clarity characteristics? - Answer-
reflections
/.What is used to determine the final clarity grade? - Answer-Loupe
/.What does each letter grade in the GIA Color Scale represent? - Answer-Range of
color
/.How can a very deep pavilion affect color appearance of a diamond? - Answer-Darken
/.What is the term for a colored diamond's fundamental color? - Answer-Characteristic
color
/.What surface is optimal for color grading diamonds? - Answer-White, non-reflective
/.What color is predominant in the "orange-yellow" hue of the GIA system? - Answer-
Yellow
/.What color grades have the largest difference in price, with all other factors equal? -
Answer-D and E
Questions With New Update Solutions
2025\2026
/. What describes the distance that's clear and sharp above and below a focus point? -
Answer-depth of field
/.What type of loupe has been corrected for color distortion and linear distortion? -
Answer-Triplet
/.What do clarity characteristics help determine? - Answer-Identity
/.What are diamond's inclusions and blemishes called? - Answer-Clarity characteristics
/.What is the abbreviation for a tiny crystal that looks like a very small dot at 10x? -
Answer-Pp
/.What does chromatic aberration cause? - Answer-Rainbow effect at edges of lens
/.What magnification is used to assess clarity characteristics' visibility? - Answer-10x
/.What clarity characteristic is caused by treatment? - Answer-Laser drill-hole
/.What is an advantage of a loupe versus a microscope in clarity grading? - Answer-
Portability
/.Where does light enter a stone in darkfield illumination? - Answer-Side
/.What type of characteristic is in focus while the surface is out of focus? - Answer-
Inclusion
/.What are the two types of inclusions? - Answer-Totally enclosed and surface-reaching
/.Which factor of clarity characteristics can influence a diamond's clarity grade? -
Answer-Size
/.What clarity grade are diamonds with minor inclusions difficult to somewhat easy to
see under 10x? - Answer-VS1 or VS2
/.What describes the nature of a clarity characteristic? - Answer-type
/.What must be listed first on the Key to Symbols? - Answer-Laser Drill-Holes
, /.What is an advantage of the GIA clarity grading system? - Answer-Uniform evaluation
/.Where is a feather that reaches both the crown and pavilion plotted? - Answer-On both
the crown and pavilion diagrams
/.What clarity range can have inclusions visible to the unaided eye? - Answer-Included
/.What are clarity characteristics that don't affect the clarity grade called? - Answer-Non-
callable
/.What is a plot? - Answer-Map of clarity characteristics
/.What best describes the clarity characteristics in SI1 and SI2 stones? - Answer-
Noticeable
/.What would disqualify a stone from being graded IF? - Answer-Pinpoint
/.What is considered in addition to the five factors when assigning a clarity grade? -
Answer-Diamond size and shape
/.What is most efficient for systematic examination during clarity grading? - Answer-
Microscope
/.What has more effect on the clarity grade of a diamond? - Answer-Deep feather
/.What should be included when judging the number of clarity characteristics? - Answer-
reflections
/.What is used to determine the final clarity grade? - Answer-Loupe
/.What does each letter grade in the GIA Color Scale represent? - Answer-Range of
color
/.How can a very deep pavilion affect color appearance of a diamond? - Answer-Darken
/.What is the term for a colored diamond's fundamental color? - Answer-Characteristic
color
/.What surface is optimal for color grading diamonds? - Answer-White, non-reflective
/.What color is predominant in the "orange-yellow" hue of the GIA system? - Answer-
Yellow
/.What color grades have the largest difference in price, with all other factors equal? -
Answer-D and E
