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Gia Colored Stone Final Exam Questions and Answers (Graded A)
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Gia Colored Stone Final Exam Questions and Answers (Graded A)Gia Colored Stone Final Exam Questions and Answers (Graded A)Gia Colored Stone Final Exam Questions and Answers (Graded A)Gia Colored Stone Final Exam Questions and Answers (Graded A) Which of the following is a gem variety? Assignment 1...

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  • September 4, 2024
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  • 2024/2025
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  • gia colored stone final exam questions and answers
  • gia colored stone final exam answers
  • which of the following is a gem variety assignme

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Gia Colored Stone Final Exam
Questions and Answers
(Graded A)
Which of the following is a gem variety? Assignment 1 - ANSWER - demantoid


A substance that consists of atoms of only one kind is a. Assignment 1 - ANSWER -
chemical element


Which of the following is an organic gem? Assignment 1 - ANSWER - amber


Many colored stones are mined by. Assignment 1 - ANSWER - independent miners
using small-scale mining methods.


Which group does almandine belong to? Assignment 1 - ANSWER - Garnet


Synthetic gem materials. Assignment 1 - ANSWER - Are not mineral


A broad gem category based on chemical composition and crystal structure is a.
Assignment 1 - ANSWER - gem species


A natural, inorganic substance with a characteristic chemical composition and
usually characteristic crystal structure is a(n). Assignment 1 - ANSWER - Mineral


Kunzite is most often found in association with. Assignment 2 - ANSWER -
tourmaline and beryl in pegmatite.


A two-phase inclusion is a cavity in a gem that's typically filled with. Assignments 3
- ANSWER - a liquid and a gas

,Which type of twinning looks as if two crystal halves are mirror images? Assignment
3 - ANSWER - contact


The world's largest gem-consuming market is. Assignment 1 - ANSWER - United
States


Which of the following is amorphous? Assignment 1 - ANSWER - amber


A gem produced by, or derived from, a living organism is. Assignment 1 - ANSWER -
organic


Most gems are. Assignment 1 - ANSWER - minerals


To be a gem, a mineral must be beautiful, durable, and. Assignment 1 - ANSWER -
rare


Media attention in the 1990s regarding its treatment reduced consumer confidence
in. Assignment 1 - ANSWER - emerald


A natural material that's made up of a mass of one or more kinds of mineral crystals
is a. Assignment 1 - ANSWER - Rock.


Myanmar's famous Mogok ruby deposits were formed by. Assignment 2 - ANSWER -
metamorphic processes.


Heat and pressure transform limestone into. Assignment 2 - ANSWER - marble


Which gem can crystallize in volcanic rock from gases released by magma?
Assignment 2 - ANSWER - Red beryl


Which is a deposit where gems eroded from the source rock and remained in place
nearby? Assignment 2 - ANSWER - Eluvial

,Most gemstones form in the. Assignment 2 - ANSWER - continental crust


From granite, pegmatite gems get exotic elements like. Assignment 2 - ANSWER -
beryllium, boron, and lithium.


Which is a key locality for hydrothermal gems? Assignment 2 - ANSWER - Ouro
Preto, Brazil


Which gem forms by metamorphism? Assignment 2 - ANSWER - Tanzanite


Emeralds are rarely found in placer deposits because they're. Assignment 2 -
ANSWER - unable to withstand much abrasion.


Most of the gems in Tanzania's Umba River Valley are found in. Assignment 2 -
ANSWER - Placers deposit


A deposit where gems are found in the rocks where they formed is called.
Assignment 2 - ANSWER - primary


Which is a workable alluvial deposit of gem minerals with economic potential?
Assignment 2 - ANSWER - placers


Which type of deposit is usually the most profitable for colored stone mining?
Assignment 2 - ANSWER - secondary


Rocks altered by heat and pressure are. Assignment 2 - ANSWER - Metamorphic


Many fashioned rubies have shallow proportions because they're cut from.
Assignment 3 - ANSWER - flattened crystals.


Which aggregate's crystals are visible only under very high magnification?
Assignment 3 - ANSWER - Cryptocrystalline

, Crystals that grow in a flux that is highly saturated with the necessary elements
tend to be. Assignment 3 - ANSWER - small


The process where electrons that selectively absorb light are passed back and forth
between neighboring impurity ions is known as. Assignment 4 - ANSWER - charge
transfer


When a gem's crystal structure splits light into two rays that each travel at a slightly
different speed and direction, it's called. Assignment 4 - ANSWER - Double refraction


Adularescence is caused by. Assignment 4 - ANSWER - scattering of light


Atoms in a gem that are not part of its essential chemical composition are.
Assignment 3 - ANSWER - trace elements


The trace elements that cause corundum's blue are. Assignment 3 - ANSWER - iron
and titanium.


How heavy an object is in relation to its size is called its. Assignment 3 - ANSWER -
Density


Which element causes red in ruby and green in emerald? Assignment 3 - ANSWER -
Chromium


Needles of actinolite found in emerald are classified as. Assignment 3 - ANSWER -
inclusions


A unit cell defines a mineral's. Assignment 3 - ANSWER - basic identity.


Rough spinel often occurs as. Assignment 3 - ANSWER - twinned crystals


Which gems are cryptocrystalline aggregates? Assignment 3 - ANSWER -
Chalcedony and turquoise

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