Thread: International gemological laboratory

Hi) I need advice on international gemological laboratories. I want to make an assessment of diamonds, but I do not know where it is best to contact with such a question.

GSI is an international gemological laboratory, where you can not only grade the gem and find out its' characteristics but also receive services such as cut-grade analysis, light analysis reports, and origin testing of loose diamonds and gemstones, treatment identification. That laboratory changed the diamond grading process and founded it on foolproof cutting-edge technology. What is more, to reduce the change of human errors, modern and quality equipment is used.

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