Gulf Institute of Gemology
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What is diamond grading? A diamond under One step of the GIG grading process Diamond Grading involves evaluating the qualities of an individual diamond and

The Chiaravalle Cross: Results of a Multidisciplinary Study Di Martino, D.; Benati, G.; Alberti, R.; Baroni, S.; Bertelli, C.; Blumer, F.; Caselli, L.; Cattaneo, R.;