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gemstone
The definition of a gemstones is a mineral or hard substance that can be polished and shaped for use in jewelry.
(noun)An example of a gemstone is an amethyst.
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See gemstone in Webster's New World College Dictionary
noun
any mineral or petrified substance that can be cut and polished for setting into a piece of jewelry
See gemstone in American Heritage Dictionary 4
noun
A precious or semiprecious stone that may be used as a jewel when cut and polished.
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