Diamond &
Diamond Grading
ACTUAL Exam
LATEST 2025 WITH
QUESTIONS AND
CORRECT
VERIFIED
ANSWERS
GUARANTEED
100% PASS
,Average girdle diameter - ANSWER-The result
achieved by adding the smallest and largest
girdle measurements of a round brilliant and
dividing by two. (Assignment 14)
Scaife - ANSWER-A rapidly spinning horizontal
disc coated with diamond powder, used to
polish diamond rough. (Assignment 9)
Scintillation - ANSWER-The flashes of light and
the contrasting dark areas you see when the
diamond, the light, or the observer moves.
(Assignment 8)
Scoop - ANSWER-A small shovel made of thin
metal, used for picking up gems. (Assignment
20)
Scratch (S) - ANSWER-A thin, dull white line
across the diamond's surface; shows no
apparent depth at 10X. (Assignment 10)
Scrubber - ANSWER-An apparatus that washes
away dirt and clay from diamond-bearing ore.
(Assignment 6)
,Secondary deposit - ANSWER-Gems found
away from their primary source. (Assignment 5)
Selective absorption - ANSWER-Process by
which a material absorbs some wavelengths of
light and transmits others. (Assignment 12)
Separation - ANSWER-Process of
distinguishing natural minerals and gems from
each other as well as from synthetics,
simulants, and treated gems. (Assignment 18)
Shape - ANSWER-The face-up outline of a
gem. (Assignment 16)
Shape appeal - ANSWER-A diamond's overall
attractiveness in relation to others of the same
shape and cutting style. (Assignment 16)
Bast - ANSWER-Frosted rough diamond.
"Bark" in Dutch. (Assignment 9)
Bearded Girdle (BG) - ANSWER-Very small
feathers that extend from the girdle surface into
, the stone; can result from the cutting process.
(Assignment 10)
Belly - ANSWER-The slightly curving center of
the long side of a pear, marquise, heart, or oval.
(Assignment 16)
Beneficiation - ANSWER-A commitment to
reserve a portion of the resources derived from
any country for the economic development of
that country. (Assignment 3)
Best Practices Principles (BPP) - ANSWER-De
Beers' formalized commitment of itself and its
sightholders to the highest ethical standards.
(Assignment 3)
Blemish - ANSWER-Clarity characteristic that's
confined to the surface of a polished gemstone.
(Assignment 10)
Block caving - ANSWER-Underground mining
that involves building a concrete-lined tunnel
under an ore deposit, then collecting the ore
through openings in the liner. (Assignment 6)
Diamond Grading
ACTUAL Exam
LATEST 2025 WITH
QUESTIONS AND
CORRECT
VERIFIED
ANSWERS
GUARANTEED
100% PASS
,Average girdle diameter - ANSWER-The result
achieved by adding the smallest and largest
girdle measurements of a round brilliant and
dividing by two. (Assignment 14)
Scaife - ANSWER-A rapidly spinning horizontal
disc coated with diamond powder, used to
polish diamond rough. (Assignment 9)
Scintillation - ANSWER-The flashes of light and
the contrasting dark areas you see when the
diamond, the light, or the observer moves.
(Assignment 8)
Scoop - ANSWER-A small shovel made of thin
metal, used for picking up gems. (Assignment
20)
Scratch (S) - ANSWER-A thin, dull white line
across the diamond's surface; shows no
apparent depth at 10X. (Assignment 10)
Scrubber - ANSWER-An apparatus that washes
away dirt and clay from diamond-bearing ore.
(Assignment 6)
,Secondary deposit - ANSWER-Gems found
away from their primary source. (Assignment 5)
Selective absorption - ANSWER-Process by
which a material absorbs some wavelengths of
light and transmits others. (Assignment 12)
Separation - ANSWER-Process of
distinguishing natural minerals and gems from
each other as well as from synthetics,
simulants, and treated gems. (Assignment 18)
Shape - ANSWER-The face-up outline of a
gem. (Assignment 16)
Shape appeal - ANSWER-A diamond's overall
attractiveness in relation to others of the same
shape and cutting style. (Assignment 16)
Bast - ANSWER-Frosted rough diamond.
"Bark" in Dutch. (Assignment 9)
Bearded Girdle (BG) - ANSWER-Very small
feathers that extend from the girdle surface into
, the stone; can result from the cutting process.
(Assignment 10)
Belly - ANSWER-The slightly curving center of
the long side of a pear, marquise, heart, or oval.
(Assignment 16)
Beneficiation - ANSWER-A commitment to
reserve a portion of the resources derived from
any country for the economic development of
that country. (Assignment 3)
Best Practices Principles (BPP) - ANSWER-De
Beers' formalized commitment of itself and its
sightholders to the highest ethical standards.
(Assignment 3)
Blemish - ANSWER-Clarity characteristic that's
confined to the surface of a polished gemstone.
(Assignment 10)
Block caving - ANSWER-Underground mining
that involves building a concrete-lined tunnel
under an ore deposit, then collecting the ore
through openings in the liner. (Assignment 6)
