GIA DIAMOND ESSENTIALS FINAL 2026 FINAL
REVIEW PACK COMPLETE QUESTION SET AND
CORE CONCEPT SUMMARY
◉ The diamond industry has changed dramatically in recent years
because. Answer: the world's supply of diamond rough has
increased.
◉ A diamond grading system provides. Answer: a consistent way to
communicate diamond quality.
◉ Diamond's supreme hardness and durability are. Answer: a result
of the conditions under which it formed.
◉ Wholesale price lists are usually organized according to. Answer:
specific combinations of the Four Cs.
◉ An estimation of the value of an article is a(n). Answer: appraisal
◉ The most consistent and dependable sources of diamond grades
are. Answer: reputable gemological laboratories.
◉ A diamond's clarity and color grades indicate its. Answer: quality
,◉ Once diamond deposits are located, mining companies. Answer:
must spend additional time and money to evaluate and develop
them.
◉ Large, high-quality diamonds are. Answer: graded much more
thoroughly than small, low-quality ones.
◉ Reputable gem laboratories don't grade mounted diamonds
because. Answer: mountings hide details of clarity and cut.
◉ A wholesaler is someone who. Answer: sells to retailers
◉ Diamond prices on wholesale price lists. Answer: depend on the
market conditions that exist when the lists are published.
◉ Dealers often sort melee by size using. Answer: sieves
◉ The Argyle mine in Australia contributed to. Answer: the rise of
the cutting industry in India.
◉ Sightholders purchase diamond rough by. Answer: attending
invitation-only trading events.
,◉ Before the discovery of South Africa's diamond deposits, the
world's two major producers were India and. Answer: Brazil
◉ Cecil Rhodes' main competitor in his early attempts to control
diamond production was. Answer: Barney Barnato
◉ The group that united in 1890 to buy and sell all of the output of
the major diamond producers, including De Beers, was the. Answer:
London Diamond Syndicate
◉ Oppenheimer's answer to low diamond demand in the 1930s was
to. Answer: shut down operations at De Beers mines.
◉ In the diamond trade, the word "specials" refers to. Answer:
diamond rough over 10.80 cts.
◉ The Central Selling Organisation was a. Answer: rough diamond
distribution agency.
◉ The South African diamond rush was sparked by. Answer: the
discovery of the Star of South Africa.
◉ Diamond sources started appearing in South Africa during the.
Answer: 1860's
, ◉ The path diamonds followed from mine to consumer was called
the. Answer: diamond pipeline.
◉ The Diamond Information Center and the Diamond Promotion
Service were created to. Answer: assist in diamond marketing
efforts.
◉ The soft, diamond-bearing material near the surface of a diamond
field was named. Answer: yellowground.
◉ De Beers Consolidated Mines Ltd. was named after. Answer: the
owners of a farm where one of the first diamond rushes took place.
◉ Who established De Beers Consolidated Mines Ltd. in 1888?.
Answer: Cecil Rhodes
◉ De Beers requires its sightholders to have an excellent reputation
in the industry and. Answer: the financial strength to make large
purchase commitments.
◉ Which diamond mine's huge production influenced the world
market in the late 1980s?. Answer: Argyle
REVIEW PACK COMPLETE QUESTION SET AND
CORE CONCEPT SUMMARY
◉ The diamond industry has changed dramatically in recent years
because. Answer: the world's supply of diamond rough has
increased.
◉ A diamond grading system provides. Answer: a consistent way to
communicate diamond quality.
◉ Diamond's supreme hardness and durability are. Answer: a result
of the conditions under which it formed.
◉ Wholesale price lists are usually organized according to. Answer:
specific combinations of the Four Cs.
◉ An estimation of the value of an article is a(n). Answer: appraisal
◉ The most consistent and dependable sources of diamond grades
are. Answer: reputable gemological laboratories.
◉ A diamond's clarity and color grades indicate its. Answer: quality
,◉ Once diamond deposits are located, mining companies. Answer:
must spend additional time and money to evaluate and develop
them.
◉ Large, high-quality diamonds are. Answer: graded much more
thoroughly than small, low-quality ones.
◉ Reputable gem laboratories don't grade mounted diamonds
because. Answer: mountings hide details of clarity and cut.
◉ A wholesaler is someone who. Answer: sells to retailers
◉ Diamond prices on wholesale price lists. Answer: depend on the
market conditions that exist when the lists are published.
◉ Dealers often sort melee by size using. Answer: sieves
◉ The Argyle mine in Australia contributed to. Answer: the rise of
the cutting industry in India.
◉ Sightholders purchase diamond rough by. Answer: attending
invitation-only trading events.
,◉ Before the discovery of South Africa's diamond deposits, the
world's two major producers were India and. Answer: Brazil
◉ Cecil Rhodes' main competitor in his early attempts to control
diamond production was. Answer: Barney Barnato
◉ The group that united in 1890 to buy and sell all of the output of
the major diamond producers, including De Beers, was the. Answer:
London Diamond Syndicate
◉ Oppenheimer's answer to low diamond demand in the 1930s was
to. Answer: shut down operations at De Beers mines.
◉ In the diamond trade, the word "specials" refers to. Answer:
diamond rough over 10.80 cts.
◉ The Central Selling Organisation was a. Answer: rough diamond
distribution agency.
◉ The South African diamond rush was sparked by. Answer: the
discovery of the Star of South Africa.
◉ Diamond sources started appearing in South Africa during the.
Answer: 1860's
, ◉ The path diamonds followed from mine to consumer was called
the. Answer: diamond pipeline.
◉ The Diamond Information Center and the Diamond Promotion
Service were created to. Answer: assist in diamond marketing
efforts.
◉ The soft, diamond-bearing material near the surface of a diamond
field was named. Answer: yellowground.
◉ De Beers Consolidated Mines Ltd. was named after. Answer: the
owners of a farm where one of the first diamond rushes took place.
◉ Who established De Beers Consolidated Mines Ltd. in 1888?.
Answer: Cecil Rhodes
◉ De Beers requires its sightholders to have an excellent reputation
in the industry and. Answer: the financial strength to make large
purchase commitments.
◉ Which diamond mine's huge production influenced the world
market in the late 1980s?. Answer: Argyle
