Onyx: Kings of the Grail
- साल: 2019
- देश: Spain
- शैली: Documentary, History
- स्टूडियो: Sevenfor
- कीवर्ड: based on novel or book, holy grail, docudrama, semi-documentary, jesus christ
- निदेशक: Roberto Girault
- कास्ट: Jim Caviezel, Maria de Medeiros, Anthony Howell, Ricard Sales, Maarten Dannenberg, Rafael Rojas