Renée de Clair's laboratory offers:
Thermoelectric Testing (ASA)
Hardness test (Mohs)
Spectroscopic examination (DIN)
Infrared spectroscopy (ASA)
Polariscopic examination (ASA)
HD digital research:
GIA Facetware Study
Symmetry Cut Study
Study "AGS" standard
Study "HRD" standard
Hearts & Arrows Study
Fire trace study