Onyx RdCity of Armadale » Mount RichonDo you (or did you) live on Onyx Rd in Mount Richon, WA? How has Onyx Rd changed over the years? What was Onyx Rd like in the early days? Who were the original residents of Onyx Rd? Ask a question or tell your story below... April 17, 2017 by PerthMETRO.net zoom out · satellite view · hybrid (zoom out) Rate this street If you would like to be a custodian/moderator of Onyx Rd, please contact us.