Gems are found in nature and rarely need to be modified to make them ready for jewelry.
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Q1: The United States and Canada owe much
Q3: Diamond is the only naturally-occurring mineral that
Q4: Isotopes of a given element vary in
Q5: Radicals are groups of tightly-bonded atoms that
Q6: Minerals are crystalline solids but may not
Q7: Quartz is a single chain tetrahedra silicate.
Q8: Glass can only be scratched by a
Q9: Nonferromagnesian minerals tend to have a light
Q10: Quartz cannot be manufactured synthetically.
Q11: Minerals originate from crystallization from
A) molten magma
B)
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