The Gemological Institute of America, also known as GIA, is one of the leading authorities of diamonds, colored stones and pearls. Established in 1931, it is a nonprofit, private, postsecondary organization that offers a range of diploma programs and courses in the areas of jewelry business management. The institute s laboratory services include diamond grading and gemstone identification. The Gemological Institute of America manages facilities in New York and California, as well as India, South Africa and Israel. The institute is also engaged in research operations. The Gemological Institute of America offers a line of gemological instruments, such as microscopes and illuminator polariscopes under the 415000 model.

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