GIA GEM 230 - Diamonds & Diamond
Grading Exam Questions and Answers
(latest Update 2025)
The diamond rush began with the discovery of _______. -
Correct Answer ✅ the Star of South Africa in 1869
Cecil Rhodes wanted to stabilize diamond prices, so he
started by _______. - Correct Answer ✅ trying to control
production
Cecil Rhodes established _______ in 1888 to direct mining
operations. - Correct Answer ✅ De Beers Consolidated
Mines Ltd.
When it couldn't own every mine, De Beers began buying
_______ from other producers to safeguard diamond prices
and ensure market stability. - Correct Answer ✅ rough
_______ heightened demand for industrial diamond rough. -
Correct Answer ✅ Military needs during WWII
Rough is sorted into categories based on _______. - Correct
Answer ✅ size, shape, clarity, and color
,GIA GEM 230 - Diamonds & Diamond
Grading Exam Questions and Answers
(latest Update 2025)
At a sight, the _______ presented a customized selection of
diamonds to each sight holder for acceptance. - Correct
Answer ✅ CSO
Central Selling Organization (CSO) - Correct Answer ✅ an
agency designed to purchase, sort, evaluate, and sell rough
diamonds
Digger - Correct Answer ✅ an independent diamond
prospector
Dry Diggings - Correct Answer ✅ a prospector's term for
diamond deposits away from water
London Diamond Syndicate - Correct Answer ✅ a group of
diamond merchants that united in 1890 to buy and sell rough
diamonds
,GIA GEM 230 - Diamonds & Diamond
Grading Exam Questions and Answers
(latest Update 2025)
Diamond Pipeline - Correct Answer ✅ the path diamonds
followed from the mine to the consumer
Sight - Correct Answer ✅ trading event where selected
clients buy rough diamonds
Sightholder - Correct Answer ✅ a diamond manufacturer or
dealer invited by De Beers to buy rough diamonds
Single-Channel Marketing - Correct Answer ✅ a direct,
centrally controlled marketing route for rough diamonds
Special - Correct Answer ✅ a rough diamond over 10.80
cts. sold separately to a slight holder who specialized in
larger stones
The CSO controlled diamond prices by _______. - Correct
Answer ✅ buying and holding supplies until demand
increased
, GIA GEM 230 - Diamonds & Diamond
Grading Exam Questions and Answers
(latest Update 2025)
Beneficaton helps countries exercise _______ control over their
natural mineral resources. - Correct Answer ✅ greater
De Beers' advocacy of _______ had a more profound impact on
the diamond market than its advocacy of branding. - Correct
Answer ✅ corporate responsibility
The future of the diamond market in manufacturing and
consumption may be in _______. - Correct Answer ✅ Asia,
especially China and India
Benefication - Correct Answer ✅ a commitment to reserve
a portion of the resources derived from any country for the
economic development of that country
Best Practice Principles (BPP) - Correct Answer ✅ De Beers'
formalized commitment of itself and its sight holders to the
highest ethical standards
Grading Exam Questions and Answers
(latest Update 2025)
The diamond rush began with the discovery of _______. -
Correct Answer ✅ the Star of South Africa in 1869
Cecil Rhodes wanted to stabilize diamond prices, so he
started by _______. - Correct Answer ✅ trying to control
production
Cecil Rhodes established _______ in 1888 to direct mining
operations. - Correct Answer ✅ De Beers Consolidated
Mines Ltd.
When it couldn't own every mine, De Beers began buying
_______ from other producers to safeguard diamond prices
and ensure market stability. - Correct Answer ✅ rough
_______ heightened demand for industrial diamond rough. -
Correct Answer ✅ Military needs during WWII
Rough is sorted into categories based on _______. - Correct
Answer ✅ size, shape, clarity, and color
,GIA GEM 230 - Diamonds & Diamond
Grading Exam Questions and Answers
(latest Update 2025)
At a sight, the _______ presented a customized selection of
diamonds to each sight holder for acceptance. - Correct
Answer ✅ CSO
Central Selling Organization (CSO) - Correct Answer ✅ an
agency designed to purchase, sort, evaluate, and sell rough
diamonds
Digger - Correct Answer ✅ an independent diamond
prospector
Dry Diggings - Correct Answer ✅ a prospector's term for
diamond deposits away from water
London Diamond Syndicate - Correct Answer ✅ a group of
diamond merchants that united in 1890 to buy and sell rough
diamonds
,GIA GEM 230 - Diamonds & Diamond
Grading Exam Questions and Answers
(latest Update 2025)
Diamond Pipeline - Correct Answer ✅ the path diamonds
followed from the mine to the consumer
Sight - Correct Answer ✅ trading event where selected
clients buy rough diamonds
Sightholder - Correct Answer ✅ a diamond manufacturer or
dealer invited by De Beers to buy rough diamonds
Single-Channel Marketing - Correct Answer ✅ a direct,
centrally controlled marketing route for rough diamonds
Special - Correct Answer ✅ a rough diamond over 10.80
cts. sold separately to a slight holder who specialized in
larger stones
The CSO controlled diamond prices by _______. - Correct
Answer ✅ buying and holding supplies until demand
increased
, GIA GEM 230 - Diamonds & Diamond
Grading Exam Questions and Answers
(latest Update 2025)
Beneficaton helps countries exercise _______ control over their
natural mineral resources. - Correct Answer ✅ greater
De Beers' advocacy of _______ had a more profound impact on
the diamond market than its advocacy of branding. - Correct
Answer ✅ corporate responsibility
The future of the diamond market in manufacturing and
consumption may be in _______. - Correct Answer ✅ Asia,
especially China and India
Benefication - Correct Answer ✅ a commitment to reserve
a portion of the resources derived from any country for the
economic development of that country
Best Practice Principles (BPP) - Correct Answer ✅ De Beers'
formalized commitment of itself and its sight holders to the
highest ethical standards
