GEM - A pearl or mineral that has been cut and polished for use as an ornament.
GEMOLOGY - The study of gems.
GEMSTONE - A crystalline rock that can be cut and polished for jewelry.
GIA - Gemological Institute of America.
GIRDLE - This is the waistband in the middle, and is sometimes faceted.
GRINDING - used to shape gemstones to a desired rough form.
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