Which of the following is considered a gem?
A) clay
B) feldspar
C) garnet
D) gold
Correct Answer:
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Q41: The diamonds we typically see today in
Q42: Diamonds are usually found in _.
A)graphite
B)kimberlite
C)metamorphic rocks
D)sedimentary
Q43: Which common gemstone results from biomineralization?
A) diamond
B)
Q44: Diamond is a polymorph of graphite.What is
Q45: Why are diamonds used in saw blades
Q49: Using the Mohs hardness scale below,which of
Q50: Gemstones are commonly found in pegmatites,which are
Q50: Which of the images below shows a
Q51: Draw and label a silicon-oxygen tetrahedron.
Q51: Explain why a cubic zirconia is NOT
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