Oman enters a new era

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

What is diamond identification? The early phase of diamond identification By diamond identification GIG answers to three main questions: Is it a real diamond or

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.;