Providing your diamond's character | GLT Diamond Services

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GLT-DS Gemmological Laboratory offers reputable & advanced gemological services prepares professional, accurate, jewelry appraisals, certifications, diamond grading, and colored gemstone identifications.

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Pnone: +90 212 516 27 57

GLT Diamond Services
Piyerloti Caddesi
& Dostlukyurdu Sokak No:3
34122 Fatih/İstanbul
Mail: info@glt-ds.com

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