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Diamonds & diamond grading final exam
Questions and Correct Answers, With
Complete Verified Solution. 100% Correct
London Diamond Syndicate - CORRECT ANSWER>>What group was critical
to De Beers's early sales strategy?
Color - CORRECT ANSWER>>How are gem-quality rough diamonds sorted?
Baby Boomers - CORRECT ANSWER>>What generation was first to connect
with diamonds as a representation of lifetime commitment?
India - CORRECT ANSWER>>Where did the diamond industry first start?
Single-channel marketing - CORRECT ANSWER>>What describes the
concept of centrally controlled supply, purchase, promotion, and sales of
rough diamonds?
Lower mantle - CORRECT ANSWER>>What mantle layer is most dense?
Will turn into graphite - CORRECT ANSWER>>What happens to diamond if
lamproite stalls in the continental crust?
When a continental and oceanic plate collide - CORRECT ANSWER>>When
does subduction occur?
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High heat and high pressure - CORRECT ANSWER>>How are metamorphic
rocks formed?
CLIPPIR diamonds, blue diamonds, Brazil's Junia diamond - CORRECT
ANSWER>>What is an example of a superdeep diamond?
A good sign that a pipe is nearby - CORRECT ANSWER>>What might black
spinel in a mineral sample indicate?
Robotic/automated crawlers - CORRECT ANSWER>>What equipment might
offshore deep-sea diamond mining use?
Primary deposits - CORRECT ANSWER>>What deposit type produces most
diamonds mined today?
Character sampling - CORRECT ANSWER>>What type of sampling gives an
initial idea of diamond quality for a deposit?
Brazil - CORRECT ANSWER>>Where are rocks and geological structures
similar to Africa found due to ancient connections?
Crystal structure - CORRECT ANSWER>>What is another term for crystal
lattice?
Type Ia - CORRECT ANSWER>>What type are most natural diamonds?
Cleavage - CORRECT ANSWER>>What is a smooth, flat break in a crystal
parallel to a cleavage plane?
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Macle - CORRECT ANSWER>>What is a flat, triangular, twinned diamond
crystal?
Intrinsic defect and extrinsic defects - CORRECT ANSWER>>What types of
point defects are found in diamonds?
Color center - CORRECT ANSWER>>What influences light absorption,
resulting in bodycolor?
Hydrogen-related defects - CORRECT ANSWER>>What trace element can
cause a violet color in diamonds?
Lower - CORRECT ANSWER>>How does the energy emitted by a gem
compare to the energy it absorbs?
White light - CORRECT ANSWER>>What type of light combines all the colors
in the visible spectrum?
Nitrogen defects - CORRECT ANSWER>>What is the most common cause of
yellow color in diamonds?
Cutting - CORRECT ANSWER>>What controls light path length within a
diamond?
Luster - CORRECT ANSWER>>What term describes a gemstone's surface in
reflected light?
Diamonds & diamond grading final exam
Questions and Correct Answers, With
Complete Verified Solution. 100% Correct
London Diamond Syndicate - CORRECT ANSWER>>What group was critical
to De Beers's early sales strategy?
Color - CORRECT ANSWER>>How are gem-quality rough diamonds sorted?
Baby Boomers - CORRECT ANSWER>>What generation was first to connect
with diamonds as a representation of lifetime commitment?
India - CORRECT ANSWER>>Where did the diamond industry first start?
Single-channel marketing - CORRECT ANSWER>>What describes the
concept of centrally controlled supply, purchase, promotion, and sales of
rough diamonds?
Lower mantle - CORRECT ANSWER>>What mantle layer is most dense?
Will turn into graphite - CORRECT ANSWER>>What happens to diamond if
lamproite stalls in the continental crust?
When a continental and oceanic plate collide - CORRECT ANSWER>>When
does subduction occur?
,2|Page
High heat and high pressure - CORRECT ANSWER>>How are metamorphic
rocks formed?
CLIPPIR diamonds, blue diamonds, Brazil's Junia diamond - CORRECT
ANSWER>>What is an example of a superdeep diamond?
A good sign that a pipe is nearby - CORRECT ANSWER>>What might black
spinel in a mineral sample indicate?
Robotic/automated crawlers - CORRECT ANSWER>>What equipment might
offshore deep-sea diamond mining use?
Primary deposits - CORRECT ANSWER>>What deposit type produces most
diamonds mined today?
Character sampling - CORRECT ANSWER>>What type of sampling gives an
initial idea of diamond quality for a deposit?
Brazil - CORRECT ANSWER>>Where are rocks and geological structures
similar to Africa found due to ancient connections?
Crystal structure - CORRECT ANSWER>>What is another term for crystal
lattice?
Type Ia - CORRECT ANSWER>>What type are most natural diamonds?
Cleavage - CORRECT ANSWER>>What is a smooth, flat break in a crystal
parallel to a cleavage plane?
, 3|Page
Macle - CORRECT ANSWER>>What is a flat, triangular, twinned diamond
crystal?
Intrinsic defect and extrinsic defects - CORRECT ANSWER>>What types of
point defects are found in diamonds?
Color center - CORRECT ANSWER>>What influences light absorption,
resulting in bodycolor?
Hydrogen-related defects - CORRECT ANSWER>>What trace element can
cause a violet color in diamonds?
Lower - CORRECT ANSWER>>How does the energy emitted by a gem
compare to the energy it absorbs?
White light - CORRECT ANSWER>>What type of light combines all the colors
in the visible spectrum?
Nitrogen defects - CORRECT ANSWER>>What is the most common cause of
yellow color in diamonds?
Cutting - CORRECT ANSWER>>What controls light path length within a
diamond?
Luster - CORRECT ANSWER>>What term describes a gemstone's surface in
reflected light?
