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GIA Diamonds and Diamond Grading Final Exam Questions and Correct Answers. Complete Verified Solution 2024.

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GIA Diamonds and Diamond Grading Final Exam Questions and Correct Answers. Complete Verified Solution 2024. Substantial price discounts are available to retailers and jewelry manufacturers who can buy in large quantities. The diamond industry has changed dramatically in recent years because the world's supply of diamond rough has increased. A diamond grading system provides a consistent way to communicate diamond quality. Diamond's supreme hardness and durability are a result of the conditions under which it formed. Wholesale price lists are usually organized according to specific combinations of the Four Cs. An estimation of the value of an article is a(n) appraisal The most consistent and dependable sources of diamond grades are reputable gemological laboratories. A diamond's clarity and color grades indicate its quality Once diamond deposits are located, mining companies must spend additional time and money to evaluate and develop them. Large, high-quality diamonds are graded much more thoroughly than small, low-quality ones. Reputable gem laboratories don't grade mounted diamonds because mountings hide details of clarity and cut. A wholesaler is someone who sells to retailers Diamond prices on wholesale price lists depend on the market conditions that exist when the lists are published. Dealers often sort melee by size using sieves The Argyle mine in Australia contributed to the rise of the cutting industry in India. Sightholders purchase diamond rough by attending invitation-only trading events. Before the discovery of South Africa's diamond deposits, the world's two major producers were India and Brazil Cecil Rhodes' main competitor in his early attempts to control diamond production was 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 London Diamond Syndicate Oppenheimer's answer to low diamond demand in the 1930s was to shut down operations at De Beers mines. In the diamond trade, the word "specials" refers to diamond rough over 10.80 cts. The Central Selling Organisation was a rough diamond distribution agency. The South African diamond rush was sparked by the discovery of the Star of South Africa. Diamond sources started appearing in South Africa during the 1860's The path diamonds followed from mine to consumer was called the diamond pipeline. The Diamond Information Center and the Diamond Promotion Service were created to assist in diamond marketing efforts. The soft, diamond-bearing material near the surface of a diamond field was named yellowground. De Beers Consolidated Mines Ltd. was named after the owners of a farm where one of the first diamond rushes took place. Who established De Beers Consolidated Mines Ltd. in 1888? Cecil Rhodes De Beers requires its sightholders to have an excellent reputation in the industry and the financial strength to make large purchase commitments. Which diamond mine's huge production influenced the world market in the late 1980s? Argyle Because the Australians believed the CSO's marketing favored large stones over smaller ones, they aggressively promoted jewelry set with their own tiny gems. De Beers became a privately owned company in May 2001 In South Africa, a new mining charter that designates the people of the country as the owners of its mineral resources is a result of Black Economic Empowerment. A commitment to reserve a portion of the resources derived from any country for the economic development of that country is called beneficiation One of the changes that resulted from De Beers' strategic review in 1999 was that De Beers changed the name of the CSO to the DTC. Vast quantities of small, inexpensive diamonds suitable for low-cost, mass-market jewelry are mined in Australia A bourse is a(n) diamond buying and selling club. A city, region, or country with a large number of gemstone manufacturers is called a Cutting Center In 2000, De Beers altered its consumer advertising by introducing the "Forevermark" logo. The diamond industry program designed to ensure that diamonds do not fund civil conflict or terrorism is called The kimberley process The involvement of a business or industry in all aspects of its product's market is called vertical integration. By 2004, more than 90 percent of manufacturing for the diamond market was done in India The program adopted by De Beers in 2007 to answer critics and resolve shortcomings of its SOC program is called Supplier of Choice 2. Businesses that sell to consumers via television cable, phone line, or satellite are called electronic retailers. Most of the world's kimberlite pipes do not contain diamonds in profitable quantities. The proper environment for diamond formation includes the right temperature, pressure and the availability of carbon. Scientists have found that diamonds form in two types of rocks, called peridotite and eclogite. Subduction occurs when two of the earth's crustal plates collide. During emplacement, if diamonds are exposed to high temperature along with decreased pressure for a long period, they will convert to graphite. Diamond is hard and graphite is soft because of the difference in the way their atoms fit together. The first authenticated diamond discovered in South Africa is named the Eureka The large, stable parts of the earth's continental crust are called Cratons Before arriving at the earth's surface, diamonds might remain in the mantle for as long as a few Hundred Million Years Diamonds were delivered to the earth's surface as recently as 20 Million years ago The deep vertical formations through which diamonds traveled to the surface are called Pipes Diamond and graphite are both made of Carbon The correct conditions for diamond formation exist under Cratons The three main components of the earth are the crust, mantle, and Core How far beneath the earth's surface do diamonds form? 90 to 140 miles (140 to 220 kilometers) Only a small percentage of known diamond deposits are mined because most Are not profitable Diamond deposits found at the ocean's shore are marine deposits. Diamonds are more concentrated in marine deposits Most of the diamonds mined today come from pipes The first step in exploring for diamonds is to look for the oldest parts of the earth's crust. Diamond rough suitable for use in jewelry is called cuttable A mine's potential profitability depends in part on its ore grade. Diamond rough suitable for use in tools, drills, and abrasives is industrial quality. The concentration of diamonds within a pipe is called ore grade For more than 2,000 years, the only known diamond sources were alluvial Indicator minerals in kimberlite and lamproite include tiny diamonds A profitable mine produces diamonds whose value is higher than the mine's operating costs. Diamonds classified as cuttable can be 100 times more valuable than industrial diamonds Gravity sorting separates diamonds from lighter materials To focus their search for diamond deposits, geologists look for indicator minerals Diamond's attraction to grease is used in separating diamond from ore gravels. Dirt and clay are washed from diamond-bearing ore by scrubbers Removal of mineral-bearing ore from a surface excavation is called open-pit mining. Shortly before the discovery of the South African deposits, the world's major diamond producer was Brazil Dense media separation is based on the fact that diamonds sink to the bottom of a mix of gravels. The Argyle mine is famous for diamonds that are pink A horizontal tunnel drilled through a diamond pipe is called a drift Russia's significant diamond deposits are in Siberia The shift in emphasis from alluvial to primary diamond mining was due to Improved Technology Most modern diamond-mining operations are large in scale and extremely expensive. Chambering and block caving are methods used in mining diamond pipes. Russia's diamond sources are almost all Alluvial Most diamonds from Australia are small and poor in quality. African diamonds are recovered from pipe, alluvial, and marine deposits. The largest percentage of world diamond production (by weight) is mined in Australia. Solid matter with atoms arranged in a regular, repeating pattern is called a(n) crystal The crystal planes most suitable for cleaving a diamond are the cubic planes The diamond term glassie refers to a well-formed octahedral crystal. A flat, triangular twinned diamond crystal is called a macle Atoms in a gem that aren't part of its essential chemical composition are called trace elements. The smallest group of atoms with a characteristic chemical composition and the basic crystal structure of a mineral is called a(n) unit cell Crystal shape is an important factor in the evaluation of rough because it affects the amount of weight retained after cutting. The habit of gem-quality diamond is the octahedron The strongest of all atomic bonds are called

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GIA Diamonds and Diamond Grading Final
Exam Questions and Correct Answers. Complete
Verified Solution 2024.
Substantial price discounts are available to retailers and jewelry manufacturers
who
can buy in large quantities.
The diamond industry has changed dramatically in recent years because
the world's supply of diamond rough has increased.
A diamond grading system provides
a consistent way to communicate diamond quality.
Diamond's supreme hardness and durability are
a result of the conditions under which it formed.
Wholesale price lists are usually organized according to
specific combinations of the Four Cs.
An estimation of the value of an article is a(n)
appraisal
The most consistent and dependable sources of diamond grades are
reputable gemological laboratories.
A diamond's clarity and color grades indicate its
quality
Once diamond deposits are located, mining companies
must spend additional time and money to evaluate and develop them.
Large, high-quality diamonds are
graded much more thoroughly than small, low-quality ones.
Reputable gem laboratories don't grade mounted diamonds because
mountings hide details of clarity and cut.
A wholesaler is someone who
sells to retailers
Diamond prices on wholesale price lists
depend on the market conditions that exist when the lists are published.
Dealers often sort melee by size using
sieves
The Argyle mine in Australia contributed to
the rise of the cutting industry in India.
Sightholders purchase diamond rough by
attending invitation-only trading events.
Before the discovery of South Africa's diamond deposits, the world's two major
producers were India and
Brazil
Cecil Rhodes' main competitor in his early attempts to control diamond
production was
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
London Diamond Syndicate
Oppenheimer's answer to low diamond demand in the 1930s was to
shut down operations at De Beers mines.
In the diamond trade, the word "specials" refers to
diamond rough over 10.80 cts.
The Central Selling Organisation was a
rough diamond distribution agency.
The South African diamond rush was sparked by
the discovery of the Star of South Africa.
Diamond sources started appearing in South Africa during the
1860's
The path diamonds followed from mine to consumer was called the
diamond pipeline.
The Diamond Information Center and the Diamond Promotion Service were
created to
assist in diamond marketing efforts.
The soft, diamond-bearing material near the surface of a diamond field was
named
yellowground.
De Beers Consolidated Mines Ltd. was named after
the owners of a farm where one of the first diamond rushes took place.
Who established De Beers Consolidated Mines Ltd. in 1888?
Cecil Rhodes
De Beers requires its sightholders to have an excellent reputation in the industry
and
the financial strength to make large purchase commitments.
Which diamond mine's huge production influenced the world market in the late
1980s?
Argyle
Because the Australians believed the CSO's marketing favored large stones over
smaller ones, they
aggressively promoted jewelry set with their own tiny gems.
De Beers became a privately owned company in
May 2001
In South Africa, a new mining charter that designates the people of the country as
the owners of its mineral resources is a result of
Black Economic Empowerment.
A commitment to reserve a portion of the resources derived from any country for
the economic development of that country is called
beneficiation
One of the changes that resulted from De Beers' strategic review in 1999 was that
De Beers
changed the name of the CSO to the DTC.

, Vast quantities of small, inexpensive diamonds suitable for low-cost, mass-
market jewelry are mined in
Australia
A bourse is a(n)
diamond buying and selling club.
A city, region, or country with a large number of gemstone manufacturers is
called a
Cutting Center
In 2000, De Beers altered its consumer advertising by
introducing the "Forevermark" logo.
The diamond industry program designed to ensure that diamonds do not fund
civil conflict or terrorism is called
The kimberley process
The involvement of a business or industry in all aspects of its product's market is
called
vertical integration.
By 2004, more than 90 percent of manufacturing for the diamond market was
done in
India
The program adopted by De Beers in 2007 to answer critics and resolve
shortcomings of its SOC program is called
Supplier of Choice 2.
Businesses that sell to consumers via television cable, phone line, or satellite are
called
electronic retailers.
Most of the world's kimberlite pipes
do not contain diamonds in profitable quantities.
The proper environment for diamond formation includes the right temperature,
pressure and
the availability of carbon.
Scientists have found that diamonds form in two types of rocks, called
peridotite and eclogite.
Subduction occurs when
two of the earth's crustal plates collide.
During emplacement, if diamonds are exposed to high temperature along with
decreased pressure for a long period, they will
convert to graphite.
Diamond is hard and graphite is soft because of the difference in
the way their atoms fit together.
The first authenticated diamond discovered in South Africa is named the
Eureka
The large, stable parts of the earth's continental crust are called
Cratons
Before arriving at the earth's surface, diamonds might remain in the mantle for as
long as a few
Hundred Million Years

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