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The European Gemological Laboratory (USA)
or EGL USA
is an independent gemstone
A gemstone or gem is a piece of mineral, which, in cut and polished form, is used to make jewelry or other adornments...
grading organization. Originally the EGL USA
was a part of the European EGL which was founded in 1974. In 1986 EGL USA
became independent of the European organization, and today is not affiliated with other EGL laboratories.