The Black Diamond Cast & Crew
Gaby MorlayMademoiselle Marthe Dubard Charles VanelFrançois Mitry Louise CarlettiNora Mitry CarlettinaNora at 9 years old Henriette DelannoyMadame de Morigny Gabrielle DavranSister Angèle Hélène ConstantThérèse Mitry Guy DenancyJacques Maurin Michel RetauxJacques at 12 years old Maurice EscandeGuy de Fresnoy Robert Dartois(uncredited) Roger VincentPrefect (uncredited) Jean DelannoyDirector / Screenplay Pierre MarquetSet Decoration Marcel MagniezProduction Design Fédote BourgasoffDirector Of Photography 
