John's Wizard Dungeon

John’s Wizard Dungeon is a VR Escape Room. You’ve Astral Projected yourself into his private lair to steal his Elixir of Life, however, the spell only lasts 5 minutes! In that time you will need to find the passcode for the door keeping the Elixir. Find three hidden gems scattered throughout John’s room and place them into the podium to reveal the code!