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Gemological Science International (GSI) is a B2B company, which uses modern technologies, newest software, equipment, and has skilled specialists to provide you the most accurate diamond grading results. Foolproof cutting-edge technology and automation help to avoid human errors and gride diamonds to the highest standard. All GSI offices worldwide work as one unit; they exchange information and knowledge, allowing GSI to continually improve the operations and ensure the highest quality of diamond grading.
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