Stuvia.com - The Marketplace to Buy and Sell your Study Material
GIA DIAMONDS AND DIAMOND GRADING FINAL NEWEST 2025 ACTUAL EXAM COMPLETE 300
QUESTIONS AND CORRECT ANSWERS
London Diamond Syndicate - (answer) What group was critical to De Beers's early sales strategy?
Color - (answer) How are gem-quality rough diamonds sorted?
Baby Boomers - (answer) What generation was first to connect with diamonds as a representation of
lifetime commitment?
India - (answer) Where did the diamond industry first start?
Single-channel marketing - (answer) What describes the concept of centrally controlled supply,
purchase, promotion, and sales of rough diamonds?
Lower mantle - (answer) What mantle layer is most dense?
Will turn into graphite - (answer) What happens to diamond if lamproite stalls in the continental crust?
When a continental and oceanic plate collide - (answer) When does subduction occur?
High heat and high pressure - (answer) How are metamorphic rocks formed?
CLIPPIR diamonds, blue diamonds, Brazil's Junia diamond - (answer) What is an example of a
superdeep diamond?
A good sign that a pipe is nearby - (answer) What might black spinel in a mineral sample indicate?
Robotic/automated crawlers - (answer) What equipment might offshore deep-sea diamond mining
use?
Primary deposits - (answer) What deposit type produces most diamonds mined today?
Downloaded by: Splashnetz | Want to earn $1.236
Distribution of this document is illegal extra per year?
, Stuvia.com - The Marketplace to Buy and Sell your Study Material
GIA DIAMONDS AND DIAMOND GRADING FINAL NEWEST 2025 ACTUAL EXAM COMPLETE 300
QUESTIONS AND CORRECT ANSWERS
Character sampling - (answer) What type of sampling gives an initial idea of diamond quality for a
deposit?
Brazil - (answer) Where are rocks and geological structures similar to Africa found due to ancient
connections?
Crystal structure - (answer) What is another term for crystal lattice?
Type Ia - (answer) What type are most natural diamonds?
Cleavage - (answer) What is a smooth, flat break in a crystal parallel to a cleavage plane?
Macle - (answer) What is a flat, triangular, twinned diamond crystal?
Intrinsic defect and extrinsic defects - (answer) What types of point defects are found in diamonds?
Color center - (answer) What influences light absorption, resulting in bodycolor?
Hydrogen-related defects - (answer) What trace element can cause a violet color in diamonds?
Lower - (answer) How does the energy emitted by a gem compare to the energy it absorbs?
White light - (answer) What type of light combines all the colors in the visible spectrum?
Nitrogen defects - (answer) What is the most common cause of yellow color in diamonds?
Cutting - (answer) What controls light path length within a diamond?
Downloaded by: Splashnetz | Want to earn $1.236
Distribution of this document is illegal extra per year?
, Stuvia.com - The Marketplace to Buy and Sell your Study Material
GIA DIAMONDS AND DIAMOND GRADING FINAL NEWEST 2025 ACTUAL EXAM COMPLETE 300
QUESTIONS AND CORRECT ANSWERS
Luster - (answer) What term describes a gemstone's surface in reflected light?
Fire - (answer) What describes the flashes of spectral colors seen in a polished diamond?
Determine which proportion combinations create the most attractive light performance - (answer)
What was the main goal of research in developing the GIA Cut Grading System?
Measured btwn the normal and the reflected light - (answer) What best describes the angle of
incidence?
Cleaving - (answer) What process splits diamond rough along its cleavage plane?
Strain - (answer) What do cutters evaluate to determine when to use a scaife for coning?
Bruting - (answer) What made true round-shaped diamonds possible?
Old European cut - (answer) What was the prototype of the modern round brilliant cut?
Holds/secures a diamond in place - (answer) What does a dop do?
High pressure, high temperature - (answer) What does HPHT stand for?
Cuboctahedrons - (answer) What rough form does NOT appear in natural diamonds
Type 1b - (answer) What diamond type can be created by the HPHT method?
CVD lab-grown diamonds - (answer) What diamonds have strain pattern and intensity similar to natural
diamonds?
Downloaded by: Splashnetz | Want to earn $1.236
Distribution of this document is illegal extra per year?
GIA DIAMONDS AND DIAMOND GRADING FINAL NEWEST 2025 ACTUAL EXAM COMPLETE 300
QUESTIONS AND CORRECT ANSWERS
London Diamond Syndicate - (answer) What group was critical to De Beers's early sales strategy?
Color - (answer) How are gem-quality rough diamonds sorted?
Baby Boomers - (answer) What generation was first to connect with diamonds as a representation of
lifetime commitment?
India - (answer) Where did the diamond industry first start?
Single-channel marketing - (answer) What describes the concept of centrally controlled supply,
purchase, promotion, and sales of rough diamonds?
Lower mantle - (answer) What mantle layer is most dense?
Will turn into graphite - (answer) What happens to diamond if lamproite stalls in the continental crust?
When a continental and oceanic plate collide - (answer) When does subduction occur?
High heat and high pressure - (answer) How are metamorphic rocks formed?
CLIPPIR diamonds, blue diamonds, Brazil's Junia diamond - (answer) What is an example of a
superdeep diamond?
A good sign that a pipe is nearby - (answer) What might black spinel in a mineral sample indicate?
Robotic/automated crawlers - (answer) What equipment might offshore deep-sea diamond mining
use?
Primary deposits - (answer) What deposit type produces most diamonds mined today?
Downloaded by: Splashnetz | Want to earn $1.236
Distribution of this document is illegal extra per year?
, Stuvia.com - The Marketplace to Buy and Sell your Study Material
GIA DIAMONDS AND DIAMOND GRADING FINAL NEWEST 2025 ACTUAL EXAM COMPLETE 300
QUESTIONS AND CORRECT ANSWERS
Character sampling - (answer) What type of sampling gives an initial idea of diamond quality for a
deposit?
Brazil - (answer) Where are rocks and geological structures similar to Africa found due to ancient
connections?
Crystal structure - (answer) What is another term for crystal lattice?
Type Ia - (answer) What type are most natural diamonds?
Cleavage - (answer) What is a smooth, flat break in a crystal parallel to a cleavage plane?
Macle - (answer) What is a flat, triangular, twinned diamond crystal?
Intrinsic defect and extrinsic defects - (answer) What types of point defects are found in diamonds?
Color center - (answer) What influences light absorption, resulting in bodycolor?
Hydrogen-related defects - (answer) What trace element can cause a violet color in diamonds?
Lower - (answer) How does the energy emitted by a gem compare to the energy it absorbs?
White light - (answer) What type of light combines all the colors in the visible spectrum?
Nitrogen defects - (answer) What is the most common cause of yellow color in diamonds?
Cutting - (answer) What controls light path length within a diamond?
Downloaded by: Splashnetz | Want to earn $1.236
Distribution of this document is illegal extra per year?
, Stuvia.com - The Marketplace to Buy and Sell your Study Material
GIA DIAMONDS AND DIAMOND GRADING FINAL NEWEST 2025 ACTUAL EXAM COMPLETE 300
QUESTIONS AND CORRECT ANSWERS
Luster - (answer) What term describes a gemstone's surface in reflected light?
Fire - (answer) What describes the flashes of spectral colors seen in a polished diamond?
Determine which proportion combinations create the most attractive light performance - (answer)
What was the main goal of research in developing the GIA Cut Grading System?
Measured btwn the normal and the reflected light - (answer) What best describes the angle of
incidence?
Cleaving - (answer) What process splits diamond rough along its cleavage plane?
Strain - (answer) What do cutters evaluate to determine when to use a scaife for coning?
Bruting - (answer) What made true round-shaped diamonds possible?
Old European cut - (answer) What was the prototype of the modern round brilliant cut?
Holds/secures a diamond in place - (answer) What does a dop do?
High pressure, high temperature - (answer) What does HPHT stand for?
Cuboctahedrons - (answer) What rough form does NOT appear in natural diamonds
Type 1b - (answer) What diamond type can be created by the HPHT method?
CVD lab-grown diamonds - (answer) What diamonds have strain pattern and intensity similar to natural
diamonds?
Downloaded by: Splashnetz | Want to earn $1.236
Distribution of this document is illegal extra per year?
