GIA - Gemological Institute of America
GIA is the best known name for diamond gradation and gemstone identification. With objectivity and experience, GIA guarantees the integrity and accuracy of each of its reports. GIA analyzes each material presented to its attention in order to determine whether it is natural or not and discloses the treatments detected during the examination.
HRD Antwerp - Institue of Gemmology
In the world of jewels and precious stones, the term Antwerp diamond has a special meaning. It is synonymous with precision, absolute integrity, experience and centuries of tradition: all these are fundamental qualities when dealing with the most precious jewel in the world: the diamond.
IGI - International Gemological Institute
The supremacy of the IGI in the gemological world is no coincidence: it is the result of continuous research, support and synergy with professionals and consumers.