1|Page
GIA Diamonds and Diamond Grading Final Exam 2026
Complete Questions With 100% Detailed
Answers||Brand new!!
What pavilion depth percentage might reflect the girdle
face-up through the table? - ANSWER-37%
Contain minor inclusions that range from difficult (VS1) or
somewhat difficult (VS2) to see at 10x
- all inclusions are possible, grade depends on overall
visibility - ANSWER-Requirements for a VS1 and VS2
Noticeable inclusions that are easy (SI1) or very easy
(SI2) to see at 10x
,2|Page
- all inclusions are possible, grade depends on visibility -
ANSWER-Requirements for a SI1 and SI2
Inclusions are obvious at 10x but can be seen without
magnification
- inclusions seriously affect durability
- usually used for industrial purposes - ANSWER-
Requirements for I1, I2, and I3
Green - blemishes
Red - inclusions
Red and Green - cavities, indented naturals, knots, etch
channels, laser drill holes
,3|Page
Black - metal work from setting - ANSWER-What do the
colors on a plot mean?
Ia: abundant, plentiful nitrogen; near-colorless to yellow
Ib: rare, less nitrogen than Ia; more yellow than Ia
IIa: very rare, little to no nitrogen; colorless, brown, or gray
IIb: very rare, contains boron, little to no nitrogen; blue -
ANSWER-Diamond types
What group was critical to De Beers's early sales
strategy? - ANSWER-London Diamond Syndicate
How are gem-quality rough diamonds sorted? - ANSWER-
Color
, 4|Page
What generation was first to connect with diamonds as a
representation of lifetime commitment? - ANSWER-Baby
Boomers
Where did the diamond industry first start? - ANSWER-
India
What describes the concept of centrally controlled supply,
purchase, promotion, and sales of rough diamonds? -
ANSWER-Single-channel marketing
What mantle layer is most dense? - ANSWER-Lower
mantle
GIA Diamonds and Diamond Grading Final Exam 2026
Complete Questions With 100% Detailed
Answers||Brand new!!
What pavilion depth percentage might reflect the girdle
face-up through the table? - ANSWER-37%
Contain minor inclusions that range from difficult (VS1) or
somewhat difficult (VS2) to see at 10x
- all inclusions are possible, grade depends on overall
visibility - ANSWER-Requirements for a VS1 and VS2
Noticeable inclusions that are easy (SI1) or very easy
(SI2) to see at 10x
,2|Page
- all inclusions are possible, grade depends on visibility -
ANSWER-Requirements for a SI1 and SI2
Inclusions are obvious at 10x but can be seen without
magnification
- inclusions seriously affect durability
- usually used for industrial purposes - ANSWER-
Requirements for I1, I2, and I3
Green - blemishes
Red - inclusions
Red and Green - cavities, indented naturals, knots, etch
channels, laser drill holes
,3|Page
Black - metal work from setting - ANSWER-What do the
colors on a plot mean?
Ia: abundant, plentiful nitrogen; near-colorless to yellow
Ib: rare, less nitrogen than Ia; more yellow than Ia
IIa: very rare, little to no nitrogen; colorless, brown, or gray
IIb: very rare, contains boron, little to no nitrogen; blue -
ANSWER-Diamond types
What group was critical to De Beers's early sales
strategy? - ANSWER-London Diamond Syndicate
How are gem-quality rough diamonds sorted? - ANSWER-
Color
, 4|Page
What generation was first to connect with diamonds as a
representation of lifetime commitment? - ANSWER-Baby
Boomers
Where did the diamond industry first start? - ANSWER-
India
What describes the concept of centrally controlled supply,
purchase, promotion, and sales of rough diamonds? -
ANSWER-Single-channel marketing
What mantle layer is most dense? - ANSWER-Lower
mantle
