GIA Colored Stones Assignment 2 Exam with 100% Accurate Answers | Latest Update
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Course
GIA Colored Stones
Institution
GIA Colored Stones
GIA Colored Stones Assignment 2 Exam
with 100% Accurate Answers | Latest
Update
rocks - the raw materials of gemstone formation
the continental crust - most colored stones form in...
gem formation - geological conditions during mountain building are
favorable for...
slow cooling - In igneous...
the continental crust - ✔✔most colored stones form in...
gem formation - ✔✔geological conditions during mountain building are
favorable for...
slow cooling - ✔✔In igneous rocks, large crystals indicate
quick cooling - ✔✔In igneous rocks, small crystals indicate
volcanic rock - ✔✔What can transport existing gems from deep in the
crust to the earth's surface?
pegmatites - ✔✔Some of the largest and most perfect gem crystals
come from...
gems - ✔✔superheated, pressurized water can transfer minerals in
solution and redeposit them in veins to form...
, mining economics - ✔✔demand, political climate, labor costs,
environment, accessibility, type of deposit, and mining methods all effect...
an understanding of gemstone formation - ✔✔What helps prospectors
pick the right places to look for gems?
thousands of tons - ✔✔What amount of rock may be eroded to yield only
a few ounces of gem material?
secondary deposits - ✔✔What are easier to work than primary deposits?
primary deposits - ✔✔What contains less concentrations of gems than
secondary deposits?
secondary deposits - ✔✔Only the toughest gems survive to become part
of...
alluvial deposit - ✔✔A deposit where gems are eroded from their source
rock, then transported away from the source and further concentrated.
contact metamorphism - ✔✔Localized changes caused by an igneous
intrusion that takes place where the magma meets the surrounding rock.
New minerals may form due to temperature changes or introduction of
fluids from the magma.
core - ✔✔The earth's innermost layer
crust - ✔✔The surface and outermost layer of the earth
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