In the near future, a lunar mining expedition discovers a new mineral, unobtanium. this mineral displays remarkable properties, not the least of which is it has a hardness of 11 on mohs scale. in order to form a gemstone out of this new mineral, what should a gem cutter use to cut and polish the facets?
a. unobtanium
b. corundum
c. diamond
d. chrysoberyl
e. anything harder than quartz
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In the near future, a lunar mining expedition discovers a new mineral, unobtanium. this mineral disp...
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