The brilliancy of a gem is a function of its index of ______________.
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Q112: The term _ refers to the way
Q113: The appearance of a mineral's surface in
Q114: The fundamental silicon-oxygen compound is silicon dioxide,
Q115: When a mineral's surface reflects light in
Q116: The Mohs scale is based on how
Q118: A set of ten minerals used as
Q119: The size and shape assumed by the
Q120: The ratio of a mineral sample's weight
Q121: Dripstone formations that form on cavern ceilings
Q122: Underground molten rock material is known as
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