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contact@gcslab.co.uk
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GCS - Gemmological Certification Services
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GCS
Founder
Stéphane Cohen-Scali
Managing Director
Stéphanie Seror
Jewellery Appraiser
Camille Perrin
Gemmologist
Alexander Duffy
Junior Gemmologist
Tena Parkinson
Junior Gemmologist
Rosie Young
Scientific Council
Pr. Gérard Panczer