International Institute of Diamond Grading and Research

17 Charterhouse Street, London EC1N 6RA ,United Kingdom
International Institute of Diamond Grading and Research International Institute of Diamond Grading and Research is one of the popular Mining Company located in 17 Charterhouse Street , listed under Professional Services in London , Mining/materials in London ,

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The International Institute of Diamond Grading & Research, established by The De Beers Group of Companies to bring diamond grading into the 21st Century.

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