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GIA DDG Final Exam Latest Update With
Correct Answers
A diamond grading system provides - ANSWER a consistent way to communicate diamond quality.
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.
Large, high quality diamonds are graded much more thoroughly than small, low - ANSWER quality ones.
Diamond's supreme hardness and durability are - ANSWER a result of the conditions under which it formed.
Once diamond deposits are located, mining companies - ANSWER must spend additional time and money to evaluate and develop them.
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.
Substantial price discounts are available to retailers and jewelry manufacturers who - ANSWER can buy in large quantities.
A diamond's clarity and color grades indicate its - ANSWER quality.
Reputable gem laboratories don't grade mounted diamonds because - ANSWER mountings hide details of clarity and cut.
Dealers often sort melee by size using - ANSWER sieves.
The diamond industry has changed dramatically in recent years because - ANSWER the world's supply of diamond rough has increased.
The Argyle mine in Australia contributed to - ANSWER the rise of the cutting industry in India.
Wholesale price lists are usually organized according to - ANSWER specific combinations of the Four Cs.
Before the discovery of South Africa's diamond deposits, the world's two major producers were India and - ANSWER Brazil.
Diamond sources started appearing in South Africa during the - ANSWER 1860s.
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.
The soft, diamond bearing material near the surface of a diamond field was named - ANSWER yellowground.
Cecil Rhodes' main competitor in his early attempts to control diamond production was - ANSWER Barney Barnato.
Who established De Beers Consolidated Mines Ltd. in 1888? - ANSWER Cecil Rhodes
De Beers Consolidated Mines Ltd. was named after - ANSWER the owners of a farm where one of the first diamond rushes took place.
One of the changes that resulted from De Beers' strategic review in 1999 was that De Beers - ANSWER changed the name of the CSO to the DTC.
In 2000, De Beers altered its consumer advertising by - ANSWER introducing the "Forevermark" logo.
The diamond industry program designed to ensure that diamonds do not fund civil conflict or terrorism is called - ANSWER the Kimberley Process.
Businesses that sell to consumers via television cable, phone line, or satellite are called - ANSWER electronic retailers.
De Beers became a privately owned company in - ANSWER May 2001.
Vast quantities of small, inexpensive diamonds suitable for low cost, mass market jewelry are mined in - ANSWER Australia.
The involvement of a business or industry in all aspects of its product's market is called - ANSWER vertical integration.
By 2004, more than 90 percent of manufacturing for the diamond market was done in - ANSWER India.
The program adopted by De Beers in 2007 to answer critics and resolve shortcomings of its SOC program is called - ANSWER Supplier of Choice 2.
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 - ANSWER Black Economic Empowerment.
Because the Australians believed the CSO's marketing favored large stones over smaller ones, they - ANSWER aggressively promoted jewelry set with their own tiny gems.
A bourse is a(n) - ANSWER diamond buying and selling club.
How far beneath the earth's surface do diamonds form? - ANSWER 90 to 140 miles (140 to 220 kilometers)
The deep vertical formations through which diamonds traveled to the surface are called - ANSWER pipes.
The first authenticated diamond discovered in South Africa is named the - ANSWER Eureka.
Most of the world's kimberlite pipes - ANSWER do not contain diamonds in profitable quantities.
The correct conditions for diamond formation exist under - ANSWER cratons.
Scientists have found that diamonds form in two types of rocks, called - ANSWER peridotite and eclogite.
The large, stable parts of the earth's continental crust are called - ANSWER cratons.
Diamond and graphite are both made of - ANSWER carbon.
For more than 2,000 years, the only known diamond sources were - ANSWER alluvial.
Diamonds are more concentrated in - ANSWER marine deposits.
Only a small percentage of known diamond deposits are mined because most
- ANSWER are not profitable.
A mine's potential profitability depends in part on - ANSWER its ore grade.
Most of the diamonds mined today come from - ANSWER pipes.
Diamonds classified as cuttable can be 100 times more valuable than - ANSWER industrial diamonds.
Indicator minerals in kimberlite and lamproite include tiny - ANSWER diamonds.
The first step in exploring for diamonds is to - ANSWER look for the oldest parts of the earth's crust.
Gravity sorting separates diamonds from - ANSWER lighter materials.
Diamond rough suitable for use in tools, drills, and abrasives is - ANSWER industrial quality.
To focus their search for diamond deposits, geologists look for - ANSWER indicator minerals.
Diamond rough suitable for use in jewelry is called - ANSWER cuttable.
A profitable mine - ANSWER produces diamonds whose value is higher than the mine's operating costs.
The concentration of diamonds within a pipe is called - ANSWER ore grade.
Shortly before the discovery of the South African deposits, the world's major diamond producer was - ANSWER Brazil.
Most diamonds from Australia are - ANSWER small and poor in quality.
Removal of mineral bearing ore from a surface excavation is called - ANSWER open-pit mining.
Dense media separation is based on the fact that - ANSWER diamonds sink to the bottom of a mix of gravels.
The Argyle mine is famous for diamonds that are - ANSWER pink.
The shift in emphasis from alluvial to primary diamond mining was due to - ANSWER improved technology.
Russia's diamond sources are almost all - ANSWER primary.
Squares or rectangles, trigons, and parallel grooves are types of - ANSWER growth marks.
The crystal planes most suitable for cleaving a diamond are the - ANSWER octahedral planes.
Which is the softest crystal direction in diamond? - ANSWER Dodecahedral
Crystal shape is an important factor in the evaluation of rough because - ANSWER it affects the amount of weight retained after cutting.
The diamond term glassie refers to - ANSWER a well-formed octahedral crystal.
A naturally occurring, inorganic substance with a characteristic chemical composition and usually a characteristic crystal structure is known as a - ANSWER mineral.
The habit of gem quality diamond is the - ANSWER octahedron.
Another name for the cubic crystal system is - ANSWER isometric.
In diamonds, cleavage is caused by - ANSWER relatively wide spaces between some atomic planes.
A flat, triangular twinned diamond crystal is called a - ANSWER macle.
The strongest of all atomic bonds are called - ANSWER covalent.
